An uncertain evil causes anxiety because, at the bottom of one's heart, one goes on hoping till the last moment that it may not be true; a certain evil, on the other hand, instills, for a time, a kind of dreary tranquillity.

When you are convinced that what you offer is yours, whether it be mediocre or of standard quality, your originality will make people love you in a way you did not expect.

A common fallacy in much of the adverse criticism to which science is subjected today is that it claims certainty, infallibility and complete emotional objectivity. It would be more nearly true to say that it is based upon wonder, adventure and hope.

The devil's happy when the critics run you off.

To like many people spontaneously and without effort is perhaps the greatest of all sources of personal happiness.

It is essential to happiness that our way of living should spring from our own deep impulses and not from the accidental tastes and desires of those who happen to be our neighbors, or even our relations.