To someone seeking power, the poorest man is the most useful.

Of the bodies in the cosmos, some imitate mind and move in orbits; some imitate soul and move in a straight line, fire and air upward, earth and water downward.

Everything destroyed is either resolved into the elements from which it came, or else vanishes into not-being. If things are resolved into the elements from which they came, then there will be others: else how did they come into being at all?

Of the cosmic Gods some make the world be, others animate it, others harmonize it, consisting as it does of different elements; the fourth class keep it when harmonized.

All those who offer an opinion on any doubtful point should first clear their minds of every sentiment of dislike, friendship, anger or pity.

The soul is the captain and ruler of the life of morals.

To like and dislike the same things that is indeed true friendship.