Quote

You cannot run a business, or anything else, on a theory.

You cannot get into business for the fashion of it.

You can't run a business just by selling one thing.

There can be theory but, you know, the problem is you've got to be able to test it. So theories are one thing, testing is another.

I wanted a theory that would allow one to live outside the office with the same philosophy one uses inside it.

I don't think anybody's really been successful with theorizing about value or creating a price theory.

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

I'm not sure what theory is, unless it's the pursuit of fundamental questions.

A theory must be tempered with reality.

Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.