It does not follow, because our ancestors made so many errors of fact and mixed them with their religion, that we should therefore leave off being religious at all. By being religious we establish ourselves in possession of ultimate reality at the only points at which reality is given us to guard. Our responsible concern is with our private destiny, after all.

No matter how full a reservoir of maxims one may possess, and no matter how good one's sentiments may be, if one has not taken advantage of every concrete opportunity to act, one's character may remain entirely unaffected for the better.

Metaphysics means nothing but an unusually obstinate effort to think clearly.

So far war has been the only force that can discipline a whole community, and until an equivalent discipline is organized, I believe that war must have its way.

Man can alter his life by altering his thinking.

It is our attitude at the beginning of a difficult task which, more than anything else, will affect its successful outcome.

The one who thinks over his experiences most, and weaves them into systematic relations with each other, will be the one with the best memory.