Happen Quote by Josephine Lawrence

The truth of a theory can never be proven, for one never knows if future experience will contradict its conclusions.

— Albert Einstein

Theory is good; but it doesn't prevent things from existing.

— Jean-Martin Charcot

Never worry about theory as long as the machinery does what it's supposed to do.

— Robert A. Heinlein

Never abandon a theory that explains something until you have a theory that explains more.

— John McCarthy

I never read theory. I think that was to my benefit.

— Nan Goldin

Any theory is better than no theory.

— Fuller Albright

[The infinitely small] neither have nor can have theory; it is a dangerous instrument in the hands of beginners [ ... ] anticipating, for…

— Francois-Joseph Servois

I'm not sure what theory is, unless it's the pursuit of fundamental questions.

— David Antin

There is nothing so practical as a good theory.

— Kurt Lewin

I am not limiting myself to theories, so I never question the rightness to my approach.

— Edward Weston

Some theories are good for nothing except to be argued about.

— Georg C. Lichtenberg

Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor…

— Karl Popper