Practice Quote by Issac Newton

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

— Max Tegmark

Theory without practice is of little value, whereas practice is the proof of theory.Theory is the knowledge, practice the ability.

— Alois Podhajsky

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

— Albert Einstein

There is a distinction, but no opposition, between theory and practice. Each to a certain extent supposes the other. Theory is dependent on practice;…

— Sir William Hamilton, 9th Baronet

“Science is progressive and self-correcting: no significantly erroneous conclusions or false hypotheses can be sustained for long, as newer observations will ultimately knock down…

— Francis S. Collins

Theory is worth but little, unless it can explain its own phenomena, and it must effect this without contradicting itself; therefore, the facts are…

— Charles Caleb Colton

Things just seem so much better in theory than in practice.

— Chris Wooding

“Well,' said Hawksmoor. 'It's a theory and a theory can do no harm.”

— Peter Ackroyd

If the theory accurately predicts what they [scientists] see, it confirms that it's a good theory. If they see something that the theory didn't…

— Clayton Christensen

The electron is a theory. But the theory is so good we can almost consider them real.

— Richard P. Feynman

No generalizing beyond the data, no theory. No theory, no insight. And if no insight, why do research.

— Henry Mintzberg

No experimental result can ever kill a theory: any theory can be saved from counterinstances either by some auxiliary hypothesis or by a suitable…

— Imre Lakatos