Genteel women suppose that those things do not really exist about which it is impossible to talk in polite company.

To forget one's purpose is the commonest form of stupidity.

The best of all things is something entirely outside your grasp: not to be born, not to be, to be nothing. But the second-best thing for you - is to die soon.

You are rewarding a teacher poorly if you remain always a pupil.

I teach you beyond Man (superman). Man is something that shall be surpassed. What have you done to surpass him?

The advocates of a criminal are seldom artists enough to turn the beautiful terribleness of the deed to the advantage of the doer.

It is not when truth is dirty, but when it is shallow, that the lover of knowledge is reluctant to step into its waters.