„Teach thy tongue to say, “I do not know,” and thous shalt progress.”

They must often change, who would be constant in happiness or wisdom.

Until one has loved an animal, a part of one's soul remains unawakened.

History is little more than the register of the crimes, follies, and misfortunes of mankind.

I can lead a nation only by following its wishes.

My dream is of a place and a time where America will once again be seen as the last best hope of earth.

Learn everything that is good from others, but bring it in, and in your own way absorb it; do not become others.