Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."
"The only way to escape the corruptible effect of praise is to go on working."
"The important thing is not to stop questioning. Curiosity has its own reason for existing."
"Life is like riding a bicycle. To keep your balance, you must keep moving."
"Try not to become a man of success, but rather to become a man of value."
"The most beautiful experience we can have is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science."
"Weakness of attitude becomes weakness of character."