Dreams

"A guy tells his psychiatrist, "I always have this weird dream at night. I am locked in a room with a door on which there is a sign. I try to push it with all my strength, but no matter how hard I try, it won't budge." The psychiatrist muses, "Interesting, but tell me what does the sign on the door say?" The guy replies, "It says 'Pull'."

Adulthood

"I sometimes ask myself how it came about that I was the one to develop the theory of relativity. The reason, I think, is that a normal adult never stops to think about problems of space and time. These are things which he has thought about as a child." -- Albert Einstein