"I have built a city on a swamp, and I will make it a paradise."

"We must not only work with our hands, but with our heads."

"The true measure of a man is not how he behaves in moments of comfort and convenience, but how he stands at times of controversy and challenge."

"It is better to have one good example than a hundred good rules."

"It is not enough to have a good mind; the main thing is to use it well."