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.

In many cases hate a person is rooted in the involuntary estimate of its virtues.

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.

Boredom is just the reverse side of fascination: both depend on being outside rather than inside a situation, and one leads to the other.

Intellect is a magnitude of intensity, not a magnitude of extensity.

Martyrdom is the only way a man can become famous without ability.

Genius and madness have something in common: both live in a world that is different from that which exists for everyone else.