Stupidity is better kept a secret than displayed.

Could you tell night from day? No, I regard all such distinctions as logically impossible.

Knowledge is not intelligence.

A blow to the head will confuse a man's thinking, a blow to the foot has no such effect, this cannot be the result of an immaterial soul.

The unlike is joined together, and from differences results the most beautiful harmony.

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.

Deliberate violence is more to be quenched than a fire