Charles Robert Darwin, was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution. He established that all species of life have descended over time from common ancestors and, in a joint publication with Alfred Russel Wallace, introduced his scientific theory that this branching pattern of evolution resulted from a process that he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding.
Darwin published his theory of evolution with compelling evidence in his 1859 book On the Origin of Species, overcoming scientific rejection of earlier concepts of transmutation of species. By the 1870s, the scientific community and much of the general public had accepted evolution as a fact. However, many favoured competing explanations and it was not until the emergence of the modern evolutionary synthesis from the 1930s to the 1950s that a broad consensus developed in which natural selection was the basic mechanism of evolution. Darwin's scientific discovery is the unifying theory of the life sciences, explaining the diversity of life.
Darwin's early interest in nature led him to neglect his medical education at the University of Edinburgh; instead, he helped to investigate marine invertebrates. Studies at the University of Cambridge encouraged his passion for natural science. His five-year voyage on HMS Beagle established him as an eminent geologist whose observations and theories supported Charles Lyell's uniformitarian ideas, and publication of his journal of the voyage made him famous as a popular author.
Puzzled by the geographical distribution of wildlife and fossils he collected on the voyage, Darwin began detailed investigations and in 1838 conceived his theory of natural selection. Although he discussed his ideas with several naturalists, he needed time for extensive research and his geological work had priority. He was writing up his theory in 1858 when Alfred Russel Wallace sent him an essay that described the same idea, prompting immediate joint publication of both of their theories. Darwin's work established evolutionary descent with modification as the dominant scientific explanation of diversification in nature. In 1871 he examined human evolution and sexual selection in The Descent of Man, and Selection in Relation to Sex, followed by The Expression of the Emotions in Man and Animals . His research on plants was published in a series of books, and in his final book, The Formation of Vegetable Mould, through the Actions of Worms , he examined earthworms and their effect on soil.
Darwin has been described as one of the most influential figures in human history, and he was honoured by burial in Westminster Abbey.
“A man who dares to waste one hour of time has not discovered the value of life.”
volume I, chapter VI: "The Voyage", page 266 http://darwin-online.org.uk/content/frameset?pageseq=284&itemID=F1452.1&viewtype=image; letter to sister Susan Elizabeth Darwin (4 August 1836)
The Life and Letters of Charles Darwin (1887)
Source: The Life & Letters of Charles Darwin
Source: The Autobiography of Charles Darwin, 1809–82
volume I, chapter III: "Comparison of the Mental Powers of Man and the Lower Animals — continued", page 101 http://darwin-online.org.uk/content/frameset?pageseq=114&itemID=F937.1&viewtype=image
The Descent of Man (1871)
Falsely attributed to Darwin, but actually from The Clansman: An Historical Romance of the Ku Klux Klan (1905) by Thomas Dixon, page 134 http://www.freefictionbooks.org/books/c/11773-the-clansman-by-thomas-dixon?start=133.
Misattributed
volume I, chapter III: "Comparison of the Mental Powers of Man and the Lower Animals — continued", pages 100-101 http://darwin-online.org.uk/content/frameset?pageseq=113&itemID=F937.1&viewtype=image
The Descent of Man (1871)
Context: As man advances in civilisation, and small tribes are united into larger communities, the simplest reason would tell each individual that he ought to extend his social instincts and sympathies to all the members of the same nation, though personally unknown to him. This point being once reached, there is only an artificial barrier to prevent his sympathies extending to the men of all nations and races. If, indeed, such men are separated from him by great differences in appearance or habits, experience unfortunately shews us how long it is before we look at them as our fellow-creatures. Sympathy beyond the confines of man, that is humanity to the lower animals, seems to be one of the latest moral acquisitions. It is apparently unfelt by savages, except towards their pets. How little the old Romans knew of it is shewn by their abhorrent gladiatorial exhibitions. The very idea of humanity, as far as I could observe, was new to most of the Gauchos of the Pampas. This virtue, one of the noblest with which man is endowed, seems to arise incidentally from our sympathies becoming more tender and more widely diffused, until they are extended to all sentient beings. As soon as this virtue is honoured and practised by some few men, it spreads through instruction and example to the young, and eventually through public opinion.
letter http://darwin-online.org.uk/content/frameset?itemID=F2113&viewtype=text&pageseq=7 to E. Ray Lankester, quoted in his essay "Charles Robert Darwin" in C.D. Warner, editor, Library of the World's Best Literature: Ancient and Modern (R.S. Peale & J.A. Hill, New York, 1896) volume 2, pages 4835-4393, at page 4391
Other letters, notebooks, journal articles, recollected statements
volume I, chapter VIII: "Religion", pages 308-309 http://darwin-online.org.uk/content/frameset?pageseq=326&itemID=F1452.1&viewtype=image
Francis Darwin calls these "extracts, somewhat abbreviated, from a part of the Autobiography, written in 1876". The original version is presented below.
The Life and Letters of Charles Darwin (1887)
Variant: p>But I was very unwilling to give up my belief;—I feel sure of this for I can well remember often and often inventing day-dreams of old letters between distinguished Romans and manuscripts being discovered at Pompeii or elsewhere which confirmed in the most striking manner all that was written in the Gospels. But I found it more and more difficult, with free scope given to my imagination, to invent evidence which would suffice to convince me. Thus disbelief crept over me at a very slow rate, but was at last complete. The rate was so slow that I felt no distress, and have never since doubted even for a single second that my conclusion was correct. I can indeed hardly see how anyone ought to wish Christianity to be true; for if so the plain language of the text seems to show that the men who do not believe, and this would include my Father, Brother and almost all my best friends, will be everlastingly punished.And this is a damnable doctrine.Although I did not think much about the existence of a personal God until a considerably later period of my life, I will here give the vague conclusions to which I have been driven. The old argument of design in nature, as given by Paley, which formerly seemed to me so conclusive, fails, now that the law of natural selection has been discovered. We can no longer argue that, for instance, the beautiful hinge of a bivalve shell must have been made by an intelligent being, like the hinge of a door by man. There seems to be no more design in the variability of organic beings and in the action of natural selection, than in the course which the wind blows. Everything in nature is the result of fixed laws. But I have discussed this subject at the end of my book on the Variation of Domesticated Animals and Plants, and the argument there given has never, as far as I can see, been answered.</p
The earliest known appearance of this basic statement is a paraphrase of Darwin in the writings of Leon C. Megginson, a management sociologist at Louisiana State University. [[Megginson, Leon C., Lessons from Europe for American Business, Southwestern Social Science Quarterly, 1963, 44(1), 3-13, p. 4]] Megginson's paraphrase (with slight variations) was later turned into a quotation. See the summary of Nicholas Matzke's findings in "One thing Darwin didn't say: the source for a misquotation" http://www.darwinproject.ac.uk/one-thing-darwin-didnt-say at the Darwin Correspondence Project. The statement is incorrectly attributed, without any source, to Clarence Darrow in Improving the Quality of Life for the Black Elderly: Challenges and Opportunities : Hearing before the Select Committee on Aging, House of Representatives, One Hundredth Congress, first session, September 25, 1987 (1988).
Misattributed
"Introduction", page 6 http://darwin-online.org.uk/content/frameset?pageseq=21&itemID=F373&viewtype=image
On the Origin of Species (1859)
volume I, "Introduction", page 3 http://darwin-online.org.uk/content/frameset?pageseq=16&itemID=F937.1&viewtype=image
Source: The Descent of Man (1871)
Context: It has often and confidently been asserted, that man's origin can never be known: but ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
“I thank God, I shall never again visit a slave-country.”
Source: The Voyage of the Beagle (1839), chapter XXI: "Mauritius To England" (second edition, 1845), pages 499-500 http://darwin-online.org.uk/content/frameset?pageseq=512&itemID=F14&viewtype=image
Context: I thank God, I shall never again visit a slave-country. To this day, if I hear a distant scream, it recalls with painful vividness my feelings, when passing a house near Pernambuco, I heard the most pitiable moans, and could not but suspect that some poor slave was being tortured, yet knew that I was as powerless as a child even to remonstrate. I suspected that these moans were from a tortured slave, for I was told that this was the case in another instance. Near Rio de Janeiro I lived opposite to an old lady, who kept screws to crush the fingers of her female slaves. I have staid in a house where a young household mulatto, daily and hourly, was reviled, beaten, and persecuted enough to break the spirit of the lowest animal. I have seen a little boy, six or seven years old, struck thrice with a horse-whip (before I could interfere) on his naked head, for having handed me a glass of water not quite clean; I saw his father tremble at a mere glance from his master's eye. … And these deeds are done and palliated by men, who profess to love their neighbours as themselves, who believe in God, and pray that his Will be done on earth! It makes one's blood boil, yet heart tremble, to think that we Englishmen and our American descendants, with their boastful cry of liberty, have been and are so guilty: but it is a consolation to reflect, that we at least have made a greater sacrifice, than ever made by any nation, to expiate our sin.
Source: On the Origin of Species (1859), chapter XV: "Recapitulation and Conclusion", page 428 http://darwin-online.org.uk/content/frameset?pageseq=456&itemID=F391&viewtype=image, in the sixth (1872) edition
Context: Authors of the highest eminence seem to be fully satisfied with the view that each species has been independently created. To my mind it accords better with what we know of the laws impressed on matter by the Creator, that the production and extinction of the past and present inhabitants of the world should have been due to secondary causes, like those determining the birth and death of the individual. When I view all beings not as special creations, but as the lineal descendants of some few beings which lived long before the first bed of the Cambrian system was deposited, they seem to me to become ennobled (emphasis, again, not Darwin's).
volume II, chapter VII: "The 'Origin of Species'", pages 311-312 http://darwin-online.org.uk/content/frameset?pageseq=327&itemID=F1452.2&viewtype=image; letter http://www.darwinproject.ac.uk/entry-2814 to Asa Gray (22 May 1860)
"Ichneumonidæ" sometimes altered to "parasitic wasps" in paraphrases of this passage.
Paraphrased as "I feel most deeply that this whole question of Creation is too profound for human intellect. A dog might as well speculate on the mind of Newton! Let each man hope and believe what he can." Elbert Hubbard, Little Journeys to the Homes of Great Scientists (1916) page 197 http://books.google.com/books?id=nYArAQAAMAAJ&pg=PA198&f=false. <!-- Sometimes claimed that this appeared in Illustrated London News (21 April 1862), but a full search of every issue of Illustrated London News (1842–2003) through Gale Digital News Vault shows that this passage never appeared. -->
The Life and Letters of Charles Darwin (1887)
Context: With respect to the theological view of the question. This is always painful to me. I am bewildered. I had no intention to write atheistically. But I own that I cannot see as plainly as others do, and as I should wish to do, evidence of design and beneficence on all sides of us. There seems to me too much misery in the world. I cannot persuade myself that a beneficent and omnipotent God would have designedly created the Ichneumonidæ with the express intention of their feeding within the living bodies of Caterpillars, or that a cat should play with mice. Not believing this, I see no necessity in the belief that the eye was expressly designed. On the other hand, I cannot anyhow be contented to view this wonderful universe, and especially the nature of man, and to conclude that everything is the result of brute force. I am inclined to look at everything as resulting from designed laws, with the details, whether good or bad, left to the working out of what we may call chance. Not that this notion at all satisfies me. I feel most deeply that the whole subject is too profound for the human intellect. A dog might as well speculate on the mind of Newton. Let each man hope and believe what he can. Certainly I agree with you that my views are not at all necessarily atheistical.
Letter to (Sept. 18, 1861) in Life of Henry Fawcett (1885) pp. 100-101 https://books.google.com/books?id=RjI7AAAAYAAJ&pg=PA100, and in More Letters of Charles Darwin: a Record of his Work in a Series of hitherto Unpublished Letters (1903) Vol. 1, p. 195 https://books.google.com/books?id=j0QeAQAAMAAJ&pg=PA195, ed., Sir Francis Darwin, Albert Charles Seward.
Other letters, notebooks, journal articles, recollected statements
Context: About thirty years ago there was much talk that geologists ought only to observe and not theorise; and I well remember some one saying that at this rate a man might as well go into a gravel-pit and count the pebbles and describe the colours. How odd it is that anyone should not see that all observation must be for or against some view if it is to be of any service!
Source: The Voyage of the Beagle (1839), chapter VIII: "Excursion to Colonia del Sacramiento, etc." (second edition, 1845), entry for 19 November 1833, pages 147-148 http://darwin-online.org.uk/content/frameset?pageseq=160&itemID=F14&viewtype=image
Context: They expressed, as was usual, unbounded astonishment at the globe being round, and could scarcely credit that a hole would, if deep enough, come out on the other side. They had, however, heard of a country where there were six months light and six of darkness, and where the inhabitants were very tall and thin! They were curious about the price and condition of horses and cattle in England. Upon finding out we did not catch our animals with the lazo, they cried out, "Ah, then, you use nothing but the bolas:" the idea of an enclosed country was quite new to them. The captain at last said, he had one question to ask me, which he should be very much obliged if I would answer with all truth. I trembled to think how deeply scientific it would be: it was, "Whether the ladies of Buenos Ayres were not the handsomest in the world." I replied, like a renegade, "Charmingly so." He added, "I have one other question: Do ladies in any other part of the world wear such large combs?" I solemnly assured him that they did not. They were absolutely delighted. The captain exclaimed, "Look there! a man who has seen half the world says it is the case; we always thought so, but now we know it." My excellent judgment in combs and beauty procured me a most hospitable reception; the captain forced me to take his bed, and he would sleep on his recado.
Source: The Voyage of the Beagle (1839), chapter XXI: "Mauritius To England" (second edition, 1845), pages 499-500 http://darwin-online.org.uk/content/frameset?pageseq=512&itemID=F14&viewtype=image
Context: I thank God, I shall never again visit a slave-country. To this day, if I hear a distant scream, it recalls with painful vividness my feelings, when passing a house near Pernambuco, I heard the most pitiable moans, and could not but suspect that some poor slave was being tortured, yet knew that I was as powerless as a child even to remonstrate. I suspected that these moans were from a tortured slave, for I was told that this was the case in another instance. Near Rio de Janeiro I lived opposite to an old lady, who kept screws to crush the fingers of her female slaves. I have staid in a house where a young household mulatto, daily and hourly, was reviled, beaten, and persecuted enough to break the spirit of the lowest animal. I have seen a little boy, six or seven years old, struck thrice with a horse-whip (before I could interfere) on his naked head, for having handed me a glass of water not quite clean; I saw his father tremble at a mere glance from his master's eye. … And these deeds are done and palliated by men, who profess to love their neighbours as themselves, who believe in God, and pray that his Will be done on earth! It makes one's blood boil, yet heart tremble, to think that we Englishmen and our American descendants, with their boastful cry of liberty, have been and are so guilty: but it is a consolation to reflect, that we at least have made a greater sacrifice, than ever made by any nation, to expiate our sin.
Source: On the Origin of Species (1859), chapter X: "On the Geological Succession of Organic Beings", pages 341-343 http://darwin-online.org.uk/content/frameset?pageseq=359&itemID=F373&viewtype=side
Context: p>I have attempted to show that the geological record is extremely imperfect; that only a small portion of the globe has been geologically explored with care; that only certain classes of organic beings have been largely preserved in a fossil state; that the number both of specimens and of species, preserved in our museums, is absolutely as nothing compared with the incalculable number of generations which must have passed away even during a single formation; that, owing to subsidence being necessary for the accumulation of fossiliferous deposits thick enough to resist future degradation, enormous intervals of time have elapsed between the successive formations; that there has probably been more extinction during the periods of subsidence, and more variation during the periods of elevation, and during the latter the record will have been least perfectly kept; that each single formation has not been continuously deposited; that the duration of each formation is, perhaps, short compared with the average duration of specific forms; that migration has played an important part in the first appearance of new forms in any one area and formation; that widely ranging species are those which have varied most, and have oftenest given rise to new species; and that varieties have at first often been local (emphasis not Darwin's). All these causes taken conjointly, must have tended to make the geological record extremely imperfect, and will to a large extent explain why we do not find interminable varieties, connecting together all the extinct and existing forms of life by the finest graduated steps. He who rejects these views on the nature of the geological record, will rightly reject my whole theory. For he may ask in vain where are the numberless transitional links which must formerly have connected the closely allied or representative species, found in the several stages of the same great formation. He may disbelieve in the enormous intervals of time which have elapsed between our consecutive formations; he may overlook how important a part migration must have played, when the formations of any one great region alone, as that of Europe, are considered; he may urge the apparent, but often falsely apparent, sudden coming in of whole groups of species. He may ask where are the remains of those infinitely numerous organisms which must have existed long before the first bed of the Silurian system was deposited: I can answer this latter question only hypothetically, by saying that as far as we can see, where our oceans now extend they have for an enormous period extended, and where our oscillating continents now stand they have stood ever since the Silurian epoch; but that long before that period, the world may have presented a wholly different aspect; and that the older continents, formed of formations older than any known to us, may now all be in a metamorphosed condition, or may lie buried under the ocean.</p
Source: On the Origin of Species (1859), chapter VII: "Instinct", page 207 http://darwin-online.org.uk/content/frameset?pageseq=225&itemID=F373&viewtype=side
Context: I must premise, that I have nothing to do with the origin of the primary mental powers, any more than I have with that of life itself. We are concerned only with the diversities of instinct and of the other mental qualities of animals within the same class.
“We are a wretched family, and ought to be exterminated.”
Volume II, Chapter III, "Spread of Evolution - 1861-1862,") p. 175 https://books.google.com/books?id=BSdBAAAAYAAJ&pg=PA175&dq=We+are+a+wretched+family+%26+ought+to+be+exterminated+++++darwin++scarlet+fever&hl=en&sa=X&ved=0CDcQ6AEwBGoVChMI0OmV8rHGxwIVA56ACh2YEAYF#v=onepage&q=We%20are%20a%20wretched%20family%20%26%20ought%20to%20be%20exterminated%20%20%20%20%20darwin%20%20scarlet%20fever&f=false. Letter to Asa Gray (1810-1888), (21 August 1862)
The Life and Letters of Charles Darwin (1887)
Context: We are a wretched family, and ought to be exterminated. We slept here to rest our poor boy on his journey to Bournemouth, and my poor dear wife sickened with scarlet fever, and has had it pretty sharply, but is recovering well. There is no end of trouble in this weary world. (Owing to the illness from scarlet fever of one of his boys, he [Darwin] took a house at Bournemouth in the autumn. He wrote to Dr. Gray from Southampton).
Source: On the Origin of Species (1859), chapter III: "Struggle For Existence", page 61 http://darwin-online.org.uk/content/frameset?pageseq=76&itemID=F373&viewtype=image
Context: Owing to this struggle for life, any variation, however slight and from whatever cause proceeding, if it be in any degree profitable to an individual of any species, in its infinitely complex relations to other organic beings and to external nature, will tend to the preservation of that individual, and will generally be inherited by its offspring. The offspring, also, will thus have a better chance of surviving, for, of the many individuals of any species which are periodically born, but a small number can survive. I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection, in order to mark its relation to man's power of selection.
“I have attempted to show that the geological record is extremely imperfect”
Source: On the Origin of Species (1859), chapter X: "On the Geological Succession of Organic Beings", pages 341-343 http://darwin-online.org.uk/content/frameset?pageseq=359&itemID=F373&viewtype=side
Context: p>I have attempted to show that the geological record is extremely imperfect; that only a small portion of the globe has been geologically explored with care; that only certain classes of organic beings have been largely preserved in a fossil state; that the number both of specimens and of species, preserved in our museums, is absolutely as nothing compared with the incalculable number of generations which must have passed away even during a single formation; that, owing to subsidence being necessary for the accumulation of fossiliferous deposits thick enough to resist future degradation, enormous intervals of time have elapsed between the successive formations; that there has probably been more extinction during the periods of subsidence, and more variation during the periods of elevation, and during the latter the record will have been least perfectly kept; that each single formation has not been continuously deposited; that the duration of each formation is, perhaps, short compared with the average duration of specific forms; that migration has played an important part in the first appearance of new forms in any one area and formation; that widely ranging species are those which have varied most, and have oftenest given rise to new species; and that varieties have at first often been local (emphasis not Darwin's). All these causes taken conjointly, must have tended to make the geological record extremely imperfect, and will to a large extent explain why we do not find interminable varieties, connecting together all the extinct and existing forms of life by the finest graduated steps. He who rejects these views on the nature of the geological record, will rightly reject my whole theory. For he may ask in vain where are the numberless transitional links which must formerly have connected the closely allied or representative species, found in the several stages of the same great formation. He may disbelieve in the enormous intervals of time which have elapsed between our consecutive formations; he may overlook how important a part migration must have played, when the formations of any one great region alone, as that of Europe, are considered; he may urge the apparent, but often falsely apparent, sudden coming in of whole groups of species. He may ask where are the remains of those infinitely numerous organisms which must have existed long before the first bed of the Silurian system was deposited: I can answer this latter question only hypothetically, by saying that as far as we can see, where our oceans now extend they have for an enormous period extended, and where our oscillating continents now stand they have stood ever since the Silurian epoch; but that long before that period, the world may have presented a wholly different aspect; and that the older continents, formed of formations older than any known to us, may now all be in a metamorphosed condition, or may lie buried under the ocean.</p
“Disinterested love for all living creatures, the most noble attribute of man.”
volume I, chapter III: "Comparison of the Mental Powers of Man and the Lower Animals — continued", page 105 http://darwin-online.org.uk/content/frameset?pageseq=118&itemID=F937.1&viewtype=image
The Descent of Man (1871)
“Blushing is the most peculiar and most human of all expressions.”
Source: The Expression of the Emotions in Man and Animals
Source: On the Origin of Species (1859), chapter VII: "Instinct", page 244 http://darwin-online.org.uk/content/frameset?pageseq=262&itemID=F373&viewtype=image
Source: The Origin of Species
volume II, chapter XXI: "General Summary and Conclusion", page 405 http://darwin-online.org.uk/content/frameset?pageseq=422&itemID=F937.2&viewtype=image
(Closing paragraph of the book.)
The Descent of Man (1871)
Context: Man may be excused for feeling some pride at having risen, though not through his own exertions, to the very summit of the organic scale; and the fact of his having thus risen, instead of having been aboriginally placed there, may give him hopes for a still higher destiny in the distant future. But we are not here concerned with hopes or fears, only with the truth as far as our reason allows us to discover it. I have given the evidence to the best of my ability; and we must acknowledge, as it seems to me, that man with all his noble qualities, with sympathy which feels for the most debased, with benevolence which extends not only to other men but to the humblest living creature, with his god-like intellect which has penetrated into the movements and constitution of the solar system — with all these exalted powers — Man still bears in his bodily frame the indelible stamp of his lowly origin.
" Notebook N http://darwin-online.org.uk/EditorialIntroductions/vanWyhe_notebooks.html" (1838) page 36 http://darwin-online.org.uk/content/frameset?pageseq=25&itemID=CUL-DAR126.-&viewtype=text
quoted in [Darwin's Religious Odyssey, 2002, William E., Phipps, Trinity Press International, 9781563383847, 32, http://books.google.com/books?id=0TA81BTW3dIC&pg=PA32]
also quoted in On Evolution: The Development of the Theory of Natural Selection (1996) edited by Thomas F. Glick and David Kohn, page 81
Other letters, notebooks, journal articles, recollected statements
Source: Notebooks
Source: On the Origin of Species (1859), chapter XV: "Recapitulation and Conclusion", page 421 http://darwin-online.org.uk/content/frameset?pageseq=449&itemID=F391&viewtype=image, in the sixth (1872) edition
“Man selects only for his own good: Nature only for that of the being which she tends.”
Source: The Origin of Species
Source: On the Origin of Species (1859), chapter XV: "Recapitulation and Conclusion", page 421 http://darwin-online.org.uk/content/frameset?pageseq=449&itemID=F391&viewtype=image, in the sixth (1872) edition
Source: The Origin of Species
Source: On the Origin of Species (1859), Chapter VI: "Difficulties on Theory", page 189 http://darwin-online.org.uk/content/frameset?pageseq=207&itemID=F373&viewtype=image
Source: The Origin of Species
“… for the shield may be as important for victory, as the sword or spear.”
Source: The Origin of Species
Source: The Autobiography of Charles Darwin, 1809–82
“It is always advisable to perceive clearly our ignorance.”
Source: The Expression of the Emotions in Man and Animals
Source: More Letters of Charles Darwin, Vol 2
volume I, chapter VIII: "Religion", page 307 http://darwin-online.org.uk/content/frameset?pageseq=325&itemID=F1452.1&viewtype=image; letter http://www.darwinproject.ac.uk/entry-11981 from Emma Darwin (wife) to N.A. Mengden (8 April 1879)
The Life and Letters of Charles Darwin (1887)
Source: The Formation of Vegetable Mould through the Action of Worms (1881), Chapter 1: Habits of Worms, p. 35. http://darwin-online.org.uk/content/frameset?pageseq=50&itemID=F1357&viewtype=image
“Alas! A scientific man ought to have no wishes, no affections — a mere heart of stone.”
Letter to T.H. Huxley, 9 July 1857, More Letters of Charles Darwin, Francis Darwin and A.C. Seward, editors (1903) volume I, chapter II: "Evolution, 1844-1858", page 98 http://darwin-online.org.uk/content/frameset?pageseq=141&itemID=F1548.1&viewtype=image
Other letters, notebooks, journal articles, recollected statements
volume I, chapter II: "Comparison of the Mental Powers of Man and the Lower Animals", page 40 http://darwin-online.org.uk/content/frameset?pageseq=53&itemID=F937.1&viewtype=image
The Descent of Man (1871)
Letter to J.D. Hooker, 29 March 1863
In The Correspondence of Charles Darwin, volume 11, 1863; Frederick Burkhardt, Duncan Porter, Sheila Ann Dean, Jonathan R. Topham, Sarah Wilmot, editors; Cambridge University Press, September 1999, page 278
Sometimes paraphrased as “One might as well speculate about the origin of matter.”
Other letters, notebooks, journal articles, recollected statements
"The action of carbonate of ammonia on chlorophyll-bodies" Journal of the Linnean Society of London (Botany) (read 6 March 1882) volume 19, pages 262-284, at page 262 http://darwin-online.org.uk/content/frameset?pageseq=1&itemID=F1801&viewtype=text
Detractors sometimes claim Darwin thought that the cell was an undifferentiated mass of protoplasm. Anyone reading this paper will realize that Darwin thought no such thing.
Other letters, notebooks, journal articles, recollected statements
volume I, chapter VII: "On the Races of Man", page 216 http://darwin-online.org.uk/content/frameset?pageseq=238&itemID=F937.1&viewtype=image
The Descent of Man (1871)
volume II, chapter XXI: "General Summary and Conclusion", page 388 http://darwin-online.org.uk/content/frameset?pageseq=405&itemID=F937.2&viewtype=image
The Descent of Man (1871)
Letter http://www.darwinproject.ac.uk/entry-2719 to J.D. Hooker, 3 March 1860
Other letters, notebooks, journal articles, recollected statements
volume I, chapter II: "Autobiography", page 46 http://darwin-online.org.uk/content/frameset?pageseq=64&itemID=F1452.1&viewtype=image
The Life and Letters of Charles Darwin (1887)
Source: The Voyage of the Beagle (1839), chapter XVII: "Galapagos Archipelago" (second edition, 1845), entry for 8 October 1835, pages 377-378 http://darwin-online.org.uk/content/frameset?pageseq=390&itemID=F14&viewtype=image
volume II, chapter XXI: "General Summary and Conclusion", page 385 http://darwin-online.org.uk/content/frameset?pageseq=402&itemID=F937.2&viewtype=image
The Descent of Man (1871)
Source: The Formation of Vegetable Mould through the Action of Worms (1881), Chapter 1: Habits of Worms, p. 28. http://darwin-online.org.uk/content/frameset?pageseq=43&itemID=F1357&viewtype=image
" Notebook C http://darwin-online.org.uk/EditorialIntroductions/vanWyhe_notebooks.html" (1838), pp. 196–197; also quoted in Charles Darwin: a scientific biography (1958) by Sir Gavin De Beer, p. 208
Other letters, notebooks, journal articles, recollected statements
volume I, chapter II: "Comparison of the Mental Powers of Man and the Lower Animals", pages 41-42 http://darwin-online.org.uk/content/frameset?pageseq=54&itemID=F937.1&viewtype=image
The Descent of Man (1871)
volume I, chapter V: "On the Development of the Intellectual and Moral Faculties during Primeval and Civilised Times" (second edition, 1874) page 143 http://darwin-online.org.uk/content/frameset?pageseq=166&itemID=F944&viewtype=image
The Descent of Man (1871)
Source: The Expression of the Emotions in Man and Animals (1872), chapter XIII: "Self-attention — Shame — Shyness — Modesty: Blushing", page 347 http://darwin-online.org.uk/content/frameset?pageseq=375&itemID=F1142&viewtype=image
volume I, chapter I: "The Evidence of the Descent of Man from some Lower Form", pages 13-14 http://darwin-online.org.uk/content/frameset?pageseq=26&itemID=F937.1&viewtype=image
The Descent of Man (1871)
volume II, chapter XXI: "General Summary and Conclusion", page 393 http://darwin-online.org.uk/content/frameset?pageseq=410&itemID=F937.2&viewtype=image
The Descent of Man (1871)
