Clash Quote by Linus Torvalds

Theory is knowledge that doesn't work. Practice is when everything works and you don't know why.

— Hermann Hesse

Theory, from whatever source, is not perfect until it is reduced to practice.

— Hosea Ballou

I believe without exception that theory follows practice. Whenever there is a conflict between theory and practice, theory is wrong. As far as I'm…

— David Baker

To understand theory is not enough. Much practice is necessary...

— Kimon Nicolaides

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

— John McCarthy

“In theory, theory and practice are the same. In practice, they are not. —Albert Einstein”

— Max Tegmark

Strange that theory and practice so seldom should accord.

— Mary Jane Holmes

Theory is when you know something, but it doesn't work. Practice is when something works, but you don't know why. Programmers combine theory and…

— Anonymous

In theory, theory and practice are the same. In practice, they are not.

— Albert Einstein

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

— Jean-Martin Charcot

In theory, practice should work like theory. In practice, it doesn't.

— Yogi Berra

The best theory is inspired by practice.

— Donald Knuth