Do something everyday that you don't want to do.

Hunger is the handmaid of genius

There is no unhappiness like the misery of sighting land (and work) again after a cheerful, careless voyage.

We have not the reverent feeling for the rainbow that the savage has, because we know how it is made. We have lost as much as we gained by prying into that matter.

... the English alphabet is pure insanity..., It can hardly spell any word in the language with any degree of certainty.

The radical of one century is the conservative of the next. The radical invents the views. When he has worn them out, the conservative adopt.

It is sound judgment to put on a bold face and play your hand for a hundred times what it is worth; forty-nine times out of fifty nobody dares to call it, and you roll in the chips.