It requires more courage to suffer than to die.

Impatience is a great obstacle to success; he who treats everything with brusqueness gathers nothing, or only immature fruit which will never ripen.

The advance and perfecting of mathematics are closely joined to the prosperity of the nation.

When small men attempt great enterprises, they always end by reducing them to the level of their mediocrity.

Religion is what keeps the poor from murdering the rich.

Imagination rules the world.

Prussia was hatched from a cannon-ball.