Office Quote by Anonymous

Philosophy is not a theory but an activity.

— Ludwig Wittgenstein

You can't run a business or anything else on a theory.

— Harold S. Geneen

“A theory is like medicine or government: often useless, sometimes necessary, always self-serving and, on occasion, lethal. It needs to be used with care,…

— Nassim Nicholas Taleb

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

— Jean-Martin Charcot

There is such a difference between life and theory.

— Anthony Trollope

Nothing can be more idle than the opposition of theory to practice!

— Jean-Baptiste Say

“In the past a theory could get by on its beauty; in the modern world a successful theory has to work for a living.”

— Howard Wainer

I think my favorite theory so far is that I am actually a robot. That's pretty great. In real life.

— Evan Rachel Wood

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

— Nan Goldin

Life is not theory. It is reality, with inherent duties to everything and everyone.

— Tivadar Kosztka Csontvary

Theories are like scaffolding: they are not the house, but you cannot build the house without them.

— Constance Fenimore Woolson

Nothing is more practical than a good theory.

— Ludwig Boltzmann