Happiness does not reside in strength or money; it lies in rightness and many-sidedness.

The man enslaved to wealth can never be honest.

Beautiful objects are wrought by study through effort, but ugly things are reaped automatically without toil.

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

The man who is fortunate in his choice of son-in-law gains a son; the man unfortunate in his choice loses his daughter also.

Life unexamined, is not worth living.

There are innumerable worlds of different sizes. In some there is neither sun not moon, in others they are larger than in ours and others have more than one. These worlds are at irregular distances, more in one direction and less in another, and some are flourishing, others declining. Here they come into being, there they die, and they are distroyed by collision with one another. Some of the worlds have no animal or vegetable life nor any water.