"I can think of nothing more important than to try to make the world a better place."

"The true purpose of education is to prepare young men and women for effective citizenship in a free society."

"I have no use for people who are always looking for excuses."

"The world is not going to be saved by a bunch of smart people. It's going to be saved by a bunch of good people."

"The qualities of a great man are vision, integrity, courage, and understanding. To these must be added the utterly essential quality of humility."