Skip to content

Fundamental ideas play the most essential role in forming a physical theory. Books on physics are full of complicated mathematical formulae. But thought and ideas, not formulae, are the beginning of every physical theory. The ideas must later take the mathematical form of a quantitative theory, to make possible the comparison with experiment.

— Albert Einstein The Evolution of Physics (1938)

Another quote →

More quotes by Albert Einstein

Whoever undertakes to set himself up as a judge of Truth and Knowledge is shipwrecked by the laughter of the gods.

Essay to Leo Baeck (1953)

A happy man is too satisfied with the present to dwell too much on the future.

Try to become not a man of success, but try rather to become a man of value.

Life is like riding a bicycle. To keep your balance you must keep moving.

Generations to come, it may well be, will scarce believe that such a man as this one ever in flesh and blood walked upon this Earth.

Statement on the occasion of Gandhi's 70th birthday (1939)

All Albert Einstein quotes →

Attribution

Quote text and notes from Wikiquote: Albert Einstein (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.