Always to distrust is an error, as well as always to trust.

Insofar as he makes use of his healthy senses, man himself is the best and most exact scientific instrument possible. The greatest misfortune of modern physics is that its experiments have been set apart from man, as it were, physics refuses to recognize nature in anything not shown by artificial instruments, and even uses this as a measure of its accomplishments.

First let a man teach himself, and then he will be taught by others.

Everywhere, we learn only from those whom we love.

Music, in the best sense, does not require novelty; nay, the older it is, and the more we are accustomed to it, the greater its effect.

If you want to reach the infinite, then explore every aspect of the finite.

If your treat an individual... as if he were what he ought to be and could be, he will become what he ought to be and could be.