Man alone of all the creatures of earth can change his own pattern. Man alone is the architect of his own destiny.

There can be no difference anywhere that does not make a difference somewhere.

Our belief at the beginning of a doubtful undertaking is the one thing that assures the successful outcome of any venture.

Life is one long struggle between conclusions based on abstract ways of conceiving cases, and opposite conclusions prompted by our instinctive perception of them.

True is the name for whatever idea starts the verification process, useful is the name for its completed function in experience

Once you accept an idea, it's an idea whose time has come.

We ought, all of us, to realize each other in this intense, pathetic, and important way. If you say that this is absurd, and that we cannot be in love with everyone at once, I merely point out to you that, as a matter of fact, certain persons do exist with an enormous capacity for friendship and for taking delight in other people's lives; and that such persons know more of truth than if their hearts were not so big.