The supreme accomplishment is to blur the line between work and play.

The absolute value of love makes life worth while, and so makes Man's strange and difficult situation acceptable. Love cannot save life from death; but it can fulfill life's purpose.

As human beings, we are endowed with freedom of choice, and we cannot shuffle off our responsibility upon the shoulders of God or nature. We must shoulder it ourselves. It is our responsibility.

Write regularly, day in and day out, at whatever times of day you find that you write best. Don't wait till you feel that you are in the mood. Write, whether you are feeling inclined to write or not.

We human beings do have some genuine freedom of choice and therefore some effective control over our own destinies. I am not a determinist. But I also believe that the decisive choice is seldom the latest choice in the series. More often than not, it will turn out to be some choice made relatively far back in the past.

History not used is nothing, for all intellectual life is action, like practical life, and if you don't use the stuff - well, it might as well be dead.

The twentieth century will be chiefly remembered by future generations not as an era of political conflicts or technical inventions, but as an age in which human society dared to think of the welfare of the whole human race as a practical objective.