The mind cannot be securely anchored. If we do not advance, we go backward. If we do not grow, we decay. If we do not develop, we shrink and shrivel.

Until every soul is freely permitted to investigate every book and creed and dogma for itself, the world cannot be free.

You cannot change the conclusion of the brain by torture, nor by social ostracism. But I will tell you what you can do by these and what you have done. You can make hypocrites by the million.

I want to tell you this: you cannot get the robe of hypocrisy on you so thick that the sharp eye of childhood will not see through every veil.

The government, in my judgment, cannot create money; the government can give its note, like an individual, and the prospect of its being paid determines its value.

We can conceive of eternity because we cannot conceive of a cessation of time. We can conceive of infinite space because we cannot conceive of so much matter that our imagination will not stand upon the farthest star and see infinite space beyond.