Quotes about variable
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Henrietta Swan Leavitt photo

“The discovery of variable stars”

Henrietta Swan Leavitt (1868–1921) astronomer

"Ten Variable Stars of the Algol Type" http://books.google.com/books?id=UkdWAAAAYAAJ&pg=PA87 (1908) Annals of the Astronomical Observatory of Harvard College Vol.60. No.5
Context: The discovery of variable stars, at this Observatory and elsewhere, has progressed so rapidly during the last five years, that the difficulty of keeping pace in observing and discussing them has become very great. In the study of distribution now in progress here, the actual time devoted to the search for new variables is small, but thorough observation requires much time, while the discussion of results may be prolonged almost indefinitely. When new lists of variables are published, therefore, it should be remembered that their discovery does not interfere materially with the study of individual objects. The number of these is so large that the publication of full results for all must be greatly delayed.

Charles Darwin photo

“It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us. These laws, taken in the largest sense, being Growth with Reproduction; Inheritance which is almost implied by reproduction; Variability from the indirect and direct action of the external conditions of life, and from use and disuse; a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms. Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.”

Last paragraph of the first edition (1859). Only use of the term "evolve" or "evolution" in the first edition.
In the second http://darwin-online.org.uk/content/frameset?pageseq=508&itemID=F376&viewtype=image (1860) through sixth (1872) editions, Darwin added the phrase "by the Creator" to read:
There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.
Source: On the Origin of Species (1859), chapter XIV: "Recapitulation and Conclusion", page 489-90 http://darwin-online.org.uk/content/frameset?pageseq=508&itemID=F373&viewtype=image

Karl Pearson photo
Karl Pearson photo
Plutarch photo
Jim Peebles photo
Jack Vance photo
Hannah Arendt photo
Nicolas Chamfort photo

“Both the court and the general public give a conventional value to men and things, and then are surprised to find themselves deceived by it. This is as if arithmeticians should give a variable an arbitrary value to the figures in a sum, and then, after restoring their true and regular value in the addition, be astonished at the incorrectness of their answer.”

Nicolas Chamfort (1741–1794) French writer

Les gens du monde et de la Cour donnent aux hommes et aux choses une valeur conventionnelle dont ils s'étonnent de se trouver les dupes. Ils ressemblent à des calculateurs, qui, en faisant un compte, donneraient aux chiffres une valeur variable et arbitraire, et qui, ensuite, dans l'addition, leur rendant leur valeur réelle et réglée, seraient tout surpris de ne pas trouver leur compte.
Maximes et Pensées, #199
Maxims and Considerations, #199

Thomas Carlyle photo
Carlo Rovelli photo