Love can do much, but duty more.

Fools and wise men are equally harmless. It is the half-fools and half-wise that are dangerous.

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.

Mannerism always wants to be finished and doesn't enjoy the process. Genuine, truly great talent, however, finds its greatest satisfaction in the production.

Everything factual is, in a sense, theory. The blue of the sky exhibits the basic laws of chromatics. There is no sense in looking for something behind phenomena: they are theory.

Those that are firm in their will mold the world to themselves.

If you call a thing bad you do little, if you call a thing good you do much