artists are exposed to great temptations: their eyes see paradise before their souls have reached it, and that is a great danger.

Morale is not a single instinct. It has many ingredients. A sense of personal responsibility, the natural courage of an individual, the amount of his acquired self-discipline -- and above all his interest in others -- these together make up the spirit of morale.

It is a very dangerous thing to have an idea that you will not practice.

Neither situations nor people can be altered by the interference of an outsider. If they are to be altered, that alteration must come from within.

When we refuse to accept our limitations, Nature, who is a stern realist, pays us out.

That a Jew is despised or persecuted is bad for him, of course-but far worse for the Christian who does it-for although persecuted he can remain a good Jew-whereas no Christian who persecutes can possibly remain-if he ever was one-a good Christian.

Knowledge cannot be changed, but the use to which it may be put can very easily be changed.