Higher aims are in themselves more valuable, even if unfulfilled, than lower ones quite attained.

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.

Sing it not in mournful numbers.

I respect the man who knows distinctly what he wants.

The effects of good music are not just because it's new; on the contrary music strikes us more the more familiar we are with it.

When you are in conflict with someone, there is one factor that can make the difference between damaging your relationship and deepening it. That factor is attitude. We don't get to know people when they come to us; we must go to them to find out what they are like.

All intelligent thoughts have already been thought; what is necessary is only to try to think them again.