Combining Philosophers

All the ideas for Philodemus, Leonhard Euler and Xenocrates

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4 ideas

14. Science / C. Induction / 3. Limits of Induction

6027	From the fact that some men die, we cannot infer that they all do [Philodemus]
	Full Idea: There is no necessary inference, from the fact that men familiar to us die when pierced through the heart, that all men do.
	From: Philodemus (On Signs (damaged) [c.50 BCE], 1.3)
	A reaction: This is scepticism about the logic of induction, long before David Hume. This is said to be a Stoic argument against Epicureans - though on the whole Stoics are not keen on scepticism.

15. Nature of Minds / A. Nature of Mind / 2. Psuche

5880	Xenocrates held that the soul had no form or substance, but was number [Xenocrates, by Cicero]
	Full Idea: Xenocrates denied that the soul had form or any substance, but said that it was number, and the power of number, as had been held by Pythagoras long before, was the highest in nature.
	From: report of Xenocrates (fragments/reports [c.327 BCE]) by M. Tullius Cicero - Tusculan Disputations I.x.20
	A reaction: This shows how strong the Pythagorean influence was in the Academy. This is not totally stupid. Dawkins holds that the essence of DNA is information, which can be expressed mathematically. Xenocrates was a functionalist.

23. Ethics / C. Virtue Theory / 3. Virtues / a. Virtues

22241	Don't fear god or worry about death; the good is easily got and the terrible easily cured [Philodemus]
	Full Idea: Don't fear god, Don't worry about death; What is good is easy to get, What is terrible is easy to cure.
	From: Philodemus (Herculaneum Papyrus [c.50 BCE], 1005,4.9-14)
	A reaction: This is known as the Four-Part Cure, and is an epicurean prayer, probably formulated by Epicurus.

26. Natural Theory / D. Laws of Nature / 1. Laws of Nature

5467	Euler said nature is instrinsically passive, and minds cause change [Euler, by Ellis]
	Full Idea: Euler thought the powers necessary for the maintenance of the changing universe would turn out to be just the passive ones of inertia and impenetrability. There are no active powers, he urged, other than those of God and living beings.
	From: report of Leonhard Euler (Letters to a German Princess [1765]) by Brian Ellis - The Philosophy of Nature: new essentialism Ch.4
	A reaction: Very significant, I think, for revealing the religious framework behind early theories of natural laws. If there is nothing external to impose powers and movements on nature, the source must be sought within - hence essentialism.