“When you look at yourself from a universal standpoint, something inside always reminds or informs you that there are bigger and better things to worry about.”

“Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.”

“I don't pretend to understand the universe — it's much bigger than I am.”

“Look deep into nature, and then you will understand everything better.”

“Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.”

“Once you can accept the universe as matter expanding into nothing that is something, wearing stripes with plaid comes easy.”

“Never memorize something that you can look up.”