John Dalton book A New System of Chemical Philosophy
Source: A New System of Chemical Philosophy (1808), Ch. III. On Chemical Synthesis
The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara (1570)
John Dalton book A New System of Chemical Philosophy
Source: A New System of Chemical Philosophy (1808), Ch. III. On Chemical Synthesis
“It is remarkable of the simple substances that they are generally in some compound form.”
Robert Chambers (publisher, born 1802) book Vestiges of the Natural History of Creation
Source: Vestiges of the Natural History of Creation (1844), p. 35
Context: It is remarkable of the simple substances that they are generally in some compound form. Thus oxygen and nitrogen, though in union they form the aerial envelope of the globe, are never found separate in nature. Carbon is pure only in the diamond. And the metallic bases of the earths, though the chemist can disengage them, may well be supposed unlikely to remain long uncombined, seeing that contact with moisture makes them burn. Combination and re-combination are principles largely pervading nature. There are few rocks, for example, that are not composed of at least two varieties of matter, each of which is again a compound of elementary substances. What is still more wonderful with respect to this principle of combination, all the elementary substances observe certain mathematical proportions in their unions. It is hence supposed that matter is composed of infinitely minute particles or atoms, each of which belonging to any one substance, can only (through the operation of some as yet hidden law) associate with a certain number of the atoms of any other.
“The post-Freudians … have fallen victim to the ravages of the intellectual division of labor.”
Russell Jacoby (1945) American historian
Source: Social Amnesia: A Critique of Conformist Psychology from Adler to Laing (1975), p. 58
Leonardo Da Vinci (1452–1519) Italian Renaissance polymath
The Notebooks of Leonardo da Vinci (1883), II Linear Perspective
“Every quantity is intellectually conceivable as infinitely divisible.”
Leonardo Da Vinci (1452–1519) Italian Renaissance polymath
The Notebooks of Leonardo da Vinci (1883), XIX Philosophical Maxims. Morals. Polemics and Speculations.
Alexander Bryan Johnson (1786–1867) United States philosopher and banker
Part II. Of the Extent of Sensible Knowledge.
The Physiology of the Senses: Or, How and what We See, Hear, Taste, Feel and Smell (1856)
Alexander Bryan Johnson (1786–1867) United States philosopher and banker
Part II. Of the Extent of Sensible Knowledge.
The Physiology of the Senses: Or, How and what We See, Hear, Taste, Feel and Smell (1856)
Lewis Gompertz (1783–1861) Early animal rights activist
"Theorem I: Personal Identity, or Identical Self", Chapter 5, pp. 69–70
Moral Inquiries on the Situation of Man and of Brutes (1824)
“The simple things are also the most extraordinary things, and only the wise can see them.”
Paulo Coelho book The Alchemist
Variant: simple things are the most valuable and only wise people appreciate them".
Source: The Alchemist