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

"The important thing is not to stop questioning. Curiosity has its own reason for existing."

"Education is what remains after one has forgotten everything he learned in school."

"We can't solve problems by using the same kind of thinking we used when we created them."

"The most incomprehensible thing about the world is that it is comprehensible."

"Peace cannot be kept by force. It can only be achieved by understanding."

"Technological progress is like an axe in the hands of a pathological criminal."

"The whole of science is nothing more than a refinement of everyday thinking."

"God does not care about our mathematical difficulties. He integrates empirically."

"The only thing that interferes with my learning is my education."

"The secret to creativity is knowing how to hide your sources."

"Science is a wonderful thing if one does not have to earn one's living at it."

"Common sense is the collection of prejudices acquired by age eighteen."

"Everything should be made as simple as possible, but not simpler."

"Great spirits have often encountered violent opposition from weak minds."

"Anyone who has never made a mistake has never tried anything new."

"Science without religion is lame. Religion without science is blind."

"Sometimes one pays most for the things one gets for nothing."

"The eternal mystery of the world is its comprehensibility."

"I never think of the future. It comes soon enough."

"Weakness of attitude becomes weakness of character."

"God is subtle but he is not malicious."

"I am convinced that He (God) does not play dice."

"A person starts to live when he can live outside himself."

"The only real valuable thing is intuition."

"Reality is merely an illusion, albeit a very persistent one."

"The hardest thing in the world to understand is the income tax."

"I want to know God's thoughts; the rest are details."

"Gravitation is not responsible for people falling in love."

"Imagination is more important than knowledge."

"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage --

-- to move in the opposite direction."

"Not everything that counts can be counted, and not everything that can be counted counts."

(Sign hanging in Einstein's office at Princeton)

"When I was a young man I vowed never to marry until I found the perfect woman. Well I found her -- but, alas, she was waiting for the perfect man."

"Lend me some sugar -- I am your neighbor."

"When you say 'far be it from you to criticize', I know you be real close to criticizin."

"It's not hard to scare people, but it's extremely difficult to unscare them."

"Life is like eating artichokes, you have to go through so much to get so little."

"When scientifically investigating the natural world, the only thing worse than a blind believer is a seeing denier."

"I always have a quotation for everything -- it saves original thinking."

"If I'd asked people what they wanted, they would have said a faster horse."

"After the laws of physics, everything else is opinion."

"Human beings are perhaps never more frightening than when they are convinced beyond doubt that they are right."

"I don't have to know anything anymore because the Internet knows everything now."

"Maybe being a bleeding heart is always better than having no heart at all."

"It seems that today stop-and-go driving is more stop than go."

"Even if you win the rat race, you're still a rat."

"The last quarter mile of any trail is always the cruelest."

"A journey of a thousand miles must begin with a single step."

"What we think, we become."

"Don't act so humble - you're not that great."