"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."

"No, this trick won't work... How on earth are you ever going to explain in terms of chemistry and physics so important a biological phenomenon as first love?"

"Love is a better master than duty."

"When you trip over love, it is easy to get up. But when you fall in love, it is impossible to stand again."

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

"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."

"Everything is determined, the beginning as well as the end, by forces over which we have no control. It is determined for the insect, as well as for the star. Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune, intoned in the distance by an invisible piper."

"God is subtle but he is not malicious."