There is nothing more frightful than for a teacher to know only what his scholars are intended to know.
A man who cannot command himself will always be a slave.
Even dirt glitters when the sun is shining upon it
Doubt can only be removed by action.
Against criticism a man can neither protest nor defend himself; he must act in spite of it, and then it will gradually yield to him.
Happiness is a ball after which we run wherever it rolls, and we push it with our feet when it stops.