All men desire by nature to know.

The bad man is continually at war with, and in opposition to, himself.

What is the highest of all goods achievable by action? ...both the general run of man and people of superior refinement say that it is happiness ...but with regard to what happiness is they differ.

A tragedy is that moment where the hero comes face to face with his true identity.

Xenophanes states that the fire in Lipara once failed for sixteen years, but returned in the seventeenth year. They say that the lava-stream in Etna is neither flaming nor continuous, but returns only after an interval of many years.

Of the irrational part of the soul again one division appears to be common to all living things, and of a vegetative nature.

Experience has shown that it is difficult, if not impossible, for a populous state to be run by good laws.