Albert Einstein

"A clever person solves a problem. A wise person avoids it."

"Weakness of attitude becomes weakness of character."

"I am convinced that a lively and lasting interest in science is not to be acquired by any laborious instruction."

"Science is the century-old endeavor to bring together by means of systematic thought the perceptible phenomena of this world into as thoroughgoing an association as possible."

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

"If we knew what it was we were doing, it would not be called research, would it?"

"Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid."

"The value of a person resides in what he gives and not in what he is able to receive."

"You do not really understand something unless you can explain it to your grandmother."

"If I had an hour to solve a problem I'd spend 55 minutes thinking about it and 5 minutes solving it."

"We cannot solve our problems with the same thinking we used when we created them."

"Look deep into nature, and then you will understand everything better."

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

"One cannot be deeply responsive to the world without being saddened very often."

"Joy in looking and comprehending is nature's most beautiful gift."

"Imagination encircles the world."

"The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function."

"I have no special talents. I am only passionately curious."

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

"Life for me has been exactly what I thought it would be. But I think it would be a tragedy if it had been."

"The mind that opens to a new idea never returns to its original dimensions."

"What a person thinks on his own, without being stimulated, is fruitful. What he learns from others is superficial."

"Only a free man can shape his own destiny, but a free man remains responsible."

"If I had my life to live over again, I would elect to be a trader of goods rather than a professional man."

"The effort to understand the universe is one of the very few things that lifts human life a little above the level of farce."

"Strange is our situation here on Earth. Each of us comes for a short visit, not knowing why, yet sometimes seeming to divine a purpose."

"Science is the belief in the ignorance of experts."

"Doubt is important. It is the key to all progress."

"Life is really simple, but we insist on making it complicated."

"The growth of understanding follows an ascending spiral rather than a straight line."