Mensch kann tun was er will; er kann aber nicht wollen was er will. (One can choose what to do, but not what to want.)

Solitude will be welcomed or endured or avoided, according as a man's personal value is large or small.

What people commonly call fate is mostly their own stupidity.

Truth that is naked is the most beautiful, and the simpler its expression the deeper is the impression it makes.

Of all the intellectual faculties, judgment is the last to mature. A child under the age of fifteen should confine its attention either to subjects like mathematics, in which errors of judgment are impossible, or to subjects in which they are not very dangerous, like languages, natural science, history, etc.

What now on the other hand makes people sociable is their incapacity to endure solitude and thus themselves.

universal compassion is the only guarantee of morality.