Civilization is the process of reducing the infinite to the finite.

I find the great thing in this world is not so much where we stand, as in what direction we are moving.

Man is born a predestined idealist, for he is born to act. To act is to affirm the worth of an end, and to persist in affirming the worth of an end is to make an ideal.

Rough work, iconoclasm, but the only way to get at truth.

Science is good furniture for one's upper chamber, if there is common sense below.

To obtain a man's opinion of you, make him mad.

Truth is tough. It will not break, like a bubble, at a touch; nay, you may kick it about all day like a football, and it will be round and full at evening.