Niels Bohr

"I would say that the task is not so much to see what no one has yet seen, but to think what nobody has yet thought about that which everybody sees."

"If quantum mechanics hasn't profoundly disturbed you, you haven't understood it yet."

"Doubt is the key to knowledge."

"In the light of quantum theory, even the concept of observer becomes somewhat doubtful."

"The great secret of success, of life, is to learn to adapt yourself to circumstances."

"The true creative process in science is the origin of the question."

"It's difficult to predict the future, especially the distant future."

"Music is like a dream. One that I cannot hear."

"Talent is a faculty that can be trained."

"The problem lies not in the physics but in the philosophy."

"The greatest challenge for a scientist is to overcome his own prejudices."

"A physicist's intuition should be based on mathematics."

"We must learn to be humble before the facts."

"In our analysis of the present situation, we can treat it as if it were a fact; that is to say, we can treat it as independent of time."

"What does it mean to say that an electron is at the same place at two successive times?"

"One should not calculate unless the calculation can tell you something new."

"The value of life lies not in the length of days but in the use we make of them."

"The paradox is only a conflict between reality and your feeling of what reality ought to be."

"One must work very hard to think clearly."

"All knowledge is a human construction."

"The task of art is to save us from utilitarianism."

"Dream not of what you will do, but of what you can accomplish."

"The heart of any man resides the greatest of powers."

"Health is a state of complete physical, mental and social well-being."

"Adventure is worthwhile."

"The greater man is, the greater shall be his fear of God."

"Imagination is more important than knowledge."

"We must not forget that we are all works in progress."

"You cannot escape the responsibility of tomorrow by evading it today."

"Be like the sun and many will make the journey to you."