Eyes and ears are poor witnesses to people if they have uncultured souls.

No man ever steps in the same river twice, for it's not the same river and he's not the same man.

All things are in flux; the flux is subject to a unifying measure or rational principle. This principle (logos, the hidden harmony behind all change) bound opposites together in a unified tension, which is like that of a lyre, where a stable harmonious sound emerges from the tension of the opposing forces that arise from the bow bound together by the string.

Knowing many things doesn't teach insight.

To get everything you want is not a good thing. Disease makes health seem sweet. Hunger leads to the appreciation of being full-fed. Tiredness creates the enjoyment of resting

People ought to fight to keep their law as to defend the city s walls.

Even sleepers are workers and collaborators on what goes on in the universe.