What the world needs is not dogma but an attitude of scientific inquiry.

Fundamental happiness depends more than anything else upon what may be called a friendly interest in persons and things.

Men who are unhappy, like men who sleep badly, are always proud of the fact.

There is something feeble, and a little contemptible, about a man who cannot face the perils of life without the help of comfortable myths. Almost inevitably some part of him is aware that they are myths and that he believes them only because they are comforting. But he dare not face this thought, and he therefore cannot carry his own reflection to any logical conclusion.

Our individual life is brief, and perhaps the whole life of mankind will be brief if measured in astronomical scale

Love should be a tree whose roots are deep in the earth, but whose branches extend into heaven.

Intelligence, it might be said, has caused our troubles; but it is not unintelligence that will cure them. Only more and wiser intelligence can make a happier world