"Life isn't worth living, unless it is lived for someone else."

"Dancers are the athletes of God."

"All religions, arts and sciences are branches of the same tree. All these aspirations are directed toward ennobling man's life, lifting it from the sphere of mere physical existence and leading the individual towards freedom." (first published 1937)]"

"The tragedy of life is what dies inside a man while he lives."

"We know from daily life that we exist for other people first of all, for whose smiles and well-being our own happiness depends."

"I speak to everyone in the same way, whether he is the garbage man or the president of the university."

"Life is like riding a bicycle. To keep your balance, you must keep moving."

"There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."

"You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat."

"An empty stomach is not a good political adviser."

"Even on the most solemn occasions I got away without wearing socks and hid that lack of civilization in high boots"

"Student: Dr. Einstein, Aren't these the same questions as last year's [physics] final exam?Dr. Einstein: Yes; But this year the answers are different."

"I never made one of my discoveries through the process of rational thinking"

"Black holes are where God divided by zero."

"When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity."

"Never memorize something that you can look up."

"Great spirits have always encountered opposition from mediocre minds. The mediocre mind is incapable of understanding the man who refuses to bow blindly to conventional prejudices and chooses instead to express his opinions courageously and honestly."

"Adversity introduces a man to himself."

"It occurred to me by intuition, and music was the driving force behind that intuition. My discovery was the result of musical perception."

"Although I am a typical loner in my daily life, my awareness of belonging to the invisible community of those who strive for truth, beauty, and justice has prevented me from feelings of isolation."

"Small is the number of them that see with their own eyes and feel with their own hearts."

"It is harder to crack prejudice than an atom."