Fool Quote by Ayn Rand

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

— Albert Einstein

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

— Hermann Hesse

The words 'theory' and 'practice' are of Greek origin; they carry our thoughts back to the ancient philosophers by whom they were contrived, and…

— William John Macquorn Rankine

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

In theory, practice and theory are the same, but in practice they are different.

— Larry McVoy

Discrepancy between theory and practice, which in sound physical and mechanical science is a delusion, has a real existence in the minds of men;…

— William John Macquorn Rankine

In theory, there is no difference between theory and practice. But, in practice, there is.

— Anonymous

Theory and practice sometimes clash. And when that happens, theory loses. Every single time.

— Linus Torvalds

The difference between theory and practice is larger in practice than the difference between theory and practice in theory.

— Jan L. A. van de Snepscheut

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

— Hosea Ballou

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

— Max Tegmark

There is such a difference between life and theory.

— Anthony Trollope