You are the only person in the world that was ever necessary to me.

Every young sculptor seems to think that he must give the world some specimen of indecorous womanhood, and call it Eve, Venus, a Nymph, or any name that may apologize for a lack of decent clothing.

A hero cannot be a hero unless in an heroic world

Is it a fact -- or have I dreamt it -- that, by means of electricity, the world of matter has become a great nerve, vibrating thousands of miles in a breathless point of time?

This world owes all its forward impulses to people ill at ease.

Great men have to be lifted upon the shoulders of the whole world, in order to conceive their great ideas, or perform their great deeds.