We should behave to our friends as we would wish our friends behave to us

For we do not think that we know a thing until we are acquainted with its primary conditions or first principles, and have carried our analysis as far as its simplest elements.

Quite often good things have hurtful consequences. There are instances of men who have been ruined by their money or killed by their courage.

Anybody can become angry - that is easy, but to be angry with the right person and to the right degree and at the right time and for the right purpose, and in the right way - that is not within everybody's power and is not easy.

Memory is the scribe of the soul.

The young are permanently in a state resembling intoxication.

In educating the young we steer them by the rudders of pleasure and pain