We, on the other hand, must take for granted that the things that exist by nature are, either all or some of them, in motion.

All art is concerned with coming into being; for it is concerned neither with things that are, or come into being by necessity, nor with things that do so in accordance with nature.

For it is owing to their wonder that men both now begin and at first began to philosophize... They were pursuing science in order to know, and not for any utilitarian end.

Laws, when good, should be supreme; and that the magistrate or magistrates should regulate those matters only on which the laws are unable to speak with precision owing to the difficulty of any general principle embracing all particulars.

... There must then be a principle of such a kind that its substance is activity.

A promise made must be a promise kept.

There is no genius who hasn't a touch of insanity.