The cost of a thing is something called life which is given in exchange for it.

I must walk toward Oregon, and not toward Europe. And that way the nation is moving, and I may say that mankind progress from east to west. We go eastward to realize history and study the works of art and literature, retracing the steps of the race; we go westward as into the future, with a spirit of enterprise and adventure.

We should impart our courage and not our despair.

I should be glad if all the meadows on the earth were left in a wild state, if that were the consequence of men's beginning to redeem themselves.

If we dealt only with the false and dishonest, we should at last forget how to speak truth.

We have heard much about the poetry of mathematics, but very little of it has as yet been sung. The ancients had a juster notion of their poetic value than we. The most distinct and beautiful statements of any truth must take at last the mathematical form. We might so simplify the rules of moral philosophy, as well as of arithmetic, that one formula would express them both.

We now no longer camp as for a night, but have settled down on earth and forgotten heaven.