Inspiration Quote by Donald Knuth

The best practice is inspired by theory.

— Donald Knuth

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

— Hosea Ballou

Theory looks well on paper, but does not amount to anything without practice.

— Josh Billings

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

— Hermann Hesse

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

— Jean-Martin Charcot

Practice should always be based upon a sound knowledge of theory.

— Leonardo da Vinci

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

— Yogi Berra

No theory is good unless it permits, not rest, but the greatest work. No theory is good except on condition that one use it…

— Andre Gide

In art, practice always comes before theory.

— Pablo Picasso

There is nothing more practical than a good theory.

— Leonid Brezhnev

Nothing is more practical than a good theory.

— Ludwig Boltzmann

Without theory, practice is but routine born of habit. Theory alone can bring forth and develop the spirit of inventions.

— Louis Pasteur