“A mervaylous newtrality have these thinges Mathematicall, and also a straunge participatió betwene thynges supernaturall, immortall, intellectual, simple and indivisible: and thynges naturall, mortall, sensible, compounded and divisible.”
The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara (1570)
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John Dee 10
English mathematican, astrologer and antiquary 1527–1608Related quotes

“It is remarkable of the simple substances that they are generally in some compound form.”
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.”
Source: Social Amnesia: A Critique of Conformist Psychology from Adler to Laing (1975), p. 58

The Notebooks of Leonardo da Vinci (1883), II Linear Perspective

“Every quantity is intellectually conceivable as infinitely divisible.”
The Notebooks of Leonardo da Vinci (1883), XIX Philosophical Maxims. Morals. Polemics and Speculations.
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)
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)

"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.”
Variant: simple things are the most valuable and only wise people appreciate them".
Source: The Alchemist