As for everything else, so for a mathematical theory: beauty can be perceived but not explained.
Arthur CayleyTheories of love are found in the works of scientists, philosophers, and theologians.
Mortimer AdlerThere are two theories on hitting the knuckleball. Unfortunately, neither of them works.
Charley LauI have a theory that self-made, first-generation actresses don't feel entitled to success.
Natasha Lyonne