“Ambition leads me not only farther than any other man has been before me, but as far as I think it possible for man to go.”

“We are going to the moon that is not very far. Man has so much farther to go within himself.”

“Any man will be able, after sufficient practice, to accomplish remarkable feats of strength, but he may go only so far and no farther. There is a limit to human physical strength that no one can exceed.”

“It is not possible to know how far the influence of any amiable, honest-hearted duty-doing man flies out into the world, but it is very possible to know how it has touched one's self in going by.”

“Now it seems to me that love of some kind is the only possible explanation of the extraordinary amount of suffering that there is in the world. I cannot conceive of any other explanation. I am convinced that there is no other, and that if the world has indeed, as I have said, been built of sorrow, it has been built by the hands of love, because in no other way could the soul of man, for whom the world was made, reach the full stature of its perfection. Pleasure for the beautiful body, but pain for the beautiful soul.”

“I need not hate any man; he cannot hurt me. I need not flatter any man; he has nothing to give me.”