Democritus

Happiness resides not in posessions and not in gold; the feeling of happiness dwells in the soul.

Whatever a poet writes with enthusiasm and a divine inspiration is very fine. Earliest reference to the madness or divine inspiration of poets.

In truth we know nothing, for truth lies in the depth.

Word is a shadow of deed.

Nature and education are somewhat similar. The latter transforms man, and in so doing creates a second nature.

By convention there is color, by convention sweetness, by convention bitterness, but in reality there are atoms and space.

Envy is the cause of political division.