Abraham Pais

“Bohr was not a philosopher, he was a physicist who thought philosophically.”

“It is my opinion that the future of theoretical physics will be even more bizarre and still more wonderful than the past.”

“He [Einstein] was the freest man I have ever known.”

“The history of physics is a history of revolutions.”

“It is not enough to have a good theory; the theory must also be beautiful.”

“The best that can be said for anybody is that you're not a prisoner of your youth.”

“Every major advance in the fundamental laws of physics has been a triumph of the speculative imagination.”

“The role of the scientist is to question everything, to challenge authority, and to seek the truth, no matter where it leads.”

“We must be humble in the face of the vastness of our ignorance.”

“The most important quality of a scientist is curiosity.”

“The joy of discovery is the greatest reward of a scientific career.”

“What we call 'reality' is a construction of our minds, based on our sensory experiences and our scientific theories.”