Duty is the necessity to act out of reverence for the law.

Maturity is having the courage to use one's own intelligence!

I have no knowledge of myself as I am, but merely as I appear to myself.

The sceptics, a kind of nomads, despising all settled culture of the land, broke up from time to time all civil society. Fortunately their number was small, and they could not prevent the old settlers from returning to cultivate the ground afresh, though without any fixed plan or agreement.

It is through good education that all the good in the world arises.

Do the right thing because it is right.

The hand is the visible part of the brain.