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

Dare to know! Have the courage to use your own intelligence!

Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

Melancholy characterizes those with a superb sense of the sublime.

Act so as to use humanity, yourself and others, always as an end and never as a means to an end.

If a man is often the subject of conversation he soon becomes the subject of criticism.

Only the descent into the hell of self-knowledge can pave the way to godliness.