Never worry about theory as long as the machinery does what it's supposed to do.
Robert A. Heinlein
I wanted to make noise, not study theory.
James Hetfield
I'm very strongly in favor of the auteur theory.
George Hickenlooper
I have a theory that evolutionary biologists are more vain than particle physicists.
Robin Ince
My theory is children don't do what you tell them to do, they do what you do. You have to always do the right thing because they follow you.
Boman Irani
The further a mathematical theory is developed, the more harmoniously and uniformly does its construction proceed, and unsuspected relations are... →
David Hilbert
Even for practical purposes theory generally turns out the most important thing in the end.
Oliver Wendell Holmes, Jr.
The moment a person forms a theory, his imagination sees in every object only the traits which favor that theory.
Thomas Jefferson
I have this theory- that if we're told we're bad, then that's the only ideal we'll ever have.
Jewel
I have a theory that the only original things we ever do are mistakes.
Billy Joel