“Nature is pleased with simplicity. And nature is no dummy”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“Truth is ever to be found in the simplicity, and not in the multiplicity and confusion of things.”

“This most beautiful system of the sun, planets and comets, could only proceed from the counsel and dominion of an intelligent and powerful Being.”

“I can calculate the motion of heavenly bodies but not the madness of people.”

“For every action, there is an equal and opposite reaction.”

“Should we not be concerned as to whether this fear of error is not just the error itself?”

“An error does not become truth by reason of multiplied propagation, nor does the truth become error because nobody will see it. 1924-1926)”

“The scientific spirit is of more value than its products, and irrationally held truths may be more harmful than reasoned errors.”

“I am older than you. Believe me, there is no other way to live on earth. Men are not open to truth or reason. They cannot be reached by a rational argument. The mind is powerless against them. Yet ...”

“The relationship between truth and reason:"Truth cannot be reached by reason alone!”

“I writeNotFor the sake of gloryNot For the sake of fameNotFor the sake of successBut for the sake of my soul”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”