“The function of education is to teach one to think intensively and to think critically. Intelligence plus character - that is the goal of true education.”

“When you head on out to the Moon, in very short order, and you get a chance to look back at the Earth, that horizon slowly curves around in upon himself, and all of sudden you're looking at something that is very strange, but yet is very, very familiar, because you're beginning to see the Earth evol”