Knowing what is right does not make a sagacious man.

The soul is characterized by these capacities; self-nutrition, sensation, thinking, and movement.

To be ignorant of motion is to be ignorant of nature

The best friend is he that, when he wishes a person's good, wishes it for that person's own sake.

The right constitutions, three in number- kingship, aristocracy, and polity- and the deviations from these, likewise three in number - tyranny from kingship, oligarchy from aristocracy, democracy from polity.

A friend is another I.

Suffering becomes beautiful when anyone bears great calamities with cheerfulness, not through insensibility but through greatness of mind.