Plants, again, inasmuch as they are without locomotion, present no great variety in their heterogeneous pacts. For, when the functions are but few, few also are the organs required to effect them. ... Animals, however, that not only live but perceive, present a great multiformity of pacts, and this diversity is greater in some animals than in others, being most varied in those to whose share has fallen not mere life but life of high degree. Now such an animal is man.

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The difference between a learned man and an ignorant one is the same as that between a living man and a corpse.

Art is a higher type of knowledge than experience.

Equality is of two kinds, numerical and proportional; by the first I mean sameness of equality in number or size; by the second, equality of ratios.

A flatterer is a friend who is your inferior, or pretends to be so.

When you are lonely, when you feel yourself an alien in the world, play Chess. This will raise your spirits and be your counselor in war