If matter cannot be destroyed, cannot be annihilated, it could not have been created. The indestructible must be uncreatable.

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.

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.

Whoever labors for the happiness of those he loves elevates himself, no matter whether he works in the dreary shop or the perfumed field.

No writer must be measured by a word or paragraph. He is to be measured by his work - by the tendency, not of one line, but by the tendency of all.

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.