"The improver of natural knowledge absolutely refuses to acknowledge authority, as such. For him, skepticism is the highest of duties blind faith the one unpardonable sin."

"Science is organized common sense where many a beautiful theory was killed by an ugly fact."

"No delusion is greater than the notion that method and industry can make up for lack of mother-wit, either in science or in practical life."

"Try to learn something about everything and everything about something."

"I am odd-looking. I sometimes think I look like a funny Muppet."

"Age is whatever you think it is. You are as old as you think you are."

"Truth is something which can't be told in a few words. Those who simplify the universe only reduce the expansion of its meaning."

"Remember happiness doesn't depend upon who you are or what you have it depends solely on what you think."