Aristotle

10 quotes

“But it is better to assume principles less in number and finite, as Empedocles makes them to be. All philosophers... make principles to be contraries... (for Parmenides makes principles to be hot and cold, and these he demominates fire and earth) as those who introduce as principles the rare and the dense. But Democritus makes the principles to be the solid and the void; of which the former, he says, has the relation of being, and the latter of non”

“The science which has to do with nature clearly concerns itself for the most part with bodies and magnitudes and their properties and movements, but also with the principles of this sort of substance, as many as they may be. On the Heavens Book I, pg. 1”

“My lectures are published and not published; they will be intelligible to those who heard them, and to none beside. Letter to Alexander the Great as quoted by William Whewell , History of the Inductive Sciences (1837), Ch. 2, Sect. 2”