Love, and you shall be loved.

There is no good theory of disease which does not at once suggest a cure.

Let a stoic open the resources of man, and tell men they are not leaning willows, but can and must detach themselves; that with the exercise of self-trust, new powers shall appear.

If a man sits down to think, he is immediately asked if he has a headache.

These arts open great gates of a future, promising to make the world plastic and to lift human life out of its beggary to a god- like ease and power.

I unsettle all things.

There are books... which rank in our life with parents and lovers and passionate experiences.