"A person who never made a mistake never tried anything new."
"We cannot solve our problems with the same thinking we used when we created them."
"Anyone who has never made a mistake has never tried anything new."
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it."
"Strive not to be a success, but rather to be of value."
"It's not that I'm so smart, it's just that I stay with problems longer."
"Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning."
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."
"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."
"Few are those who see with their own eyes and feel with their own hearts."
"Whoever is careless with the truth in small matters cannot be trusted with important matters."
"No problem can be solved from the same level of consciousness that created it."
"The true sign of intelligence is not knowledge but imagination."
"As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality."
"Reality is merely an illusion, albeit a very persistent one."
"Pure mathematics is, in its way, the poetry of logical ideas."
"The only thing that interferes with my learning is my education."
"Logic will get you from A to B. Imagination will take you everywhere."
"The most beautiful thing we can experience is the mysterious. It is the source of all true art and science."
"The monotony and solitude of a quiet life stimulates the creative mind."
"Only a life lived for others is a life worthwhile."
"When the solution is simple, God is answering."
"Weakness of attitude becomes weakness of character."
"Without deep reflection one knows from daily life that one exists for other people."
"I live in that solitude which is painful in youth, but delicious in the years of maturity."
