Mankind has become so much one family that we cannot insure our own prosperity except by insuring that of everyone else.

Many a man will have the courage to die gallantly, but will not have the courage to say, or even to think, that the cause for which he is asked to die is an unworthy one.

Moral progress has consisted in the main of protest against cruel customs, and of attempts to enlarge human sympathy.

The whole conception of a God is a conception derived from the ancient oriental despotisms. It is a conception quite unworthy of free men. We ought to stand up and look the world frankly in the face. We ought to make the best we can of the world, and if it is not so good as we wish, after all it will still be better than what these others have made of it in all these ages.

To be happy in this world, especially when youth is past, it is necessary to feel oneself not merely an isolated individual whose day will soon be over, but part of the stream of life flowing on from the first germ to the remote and unknown future.

What will be the good of the conquest of leisure and health, if no one remembers how to use them?

You could live without the opera singer, but not without the services of the baker. On this ground you might say that the baker performs a greater service; but no lover of music would agree.