Whether the human mind can advance or not, is a question too little discussed, for nothing can be more dangerous than to found our social philosophy on any theory which is debatable but has not been debated.
Gilbert Keith Chesterton
The value of a principle is the number of things it will explain; and there is no good theory of disease which does not at once suggest a cure.
Ralph Waldo Emerson
The difference between guilt and shame is very clearóin theory. We feel guilty for what we do. We feel shame for what we are.
LEWIS B. SMEDES
Mathematical theory, tested in practice and constantly retested, is a valuable aid to play. Mathematics alone will blind you and let others rob you.
Aaron C. Brown
Our new economic approach is rooted in ideas which stress the importance of macro-economics, post neo-classical endogenous growth theory and the symbiotic relationships between growth and investment, and people and infrastructure.
James Gordon Brown
The girl I find who wants to talk about quantum theory in a bar is the one I want to marry.
Brandon Boyd
I am now convinced that theoretical physics is actually philosophy. It has revolutionized fundamental concepts, e.g., abut space and time (relativity), about causality (quantum theory), and about substance and matter (atomistics). It has taught us new methods of thinking (complimentarity), which are applicable far beyond physics.
Max Born
The farther the experiment is from theory the closer it is to the Nobel Prize.
Frederic Joliot-Curie
Philosophy is not a theory but an activity
Ludwig Wittgenstein
In baseball, my theory is to strive for consistency, not to worry about the numbers. If you dwell on statistics you get shortsighted, if you aim for consistency, the numbers will be there at the end
Tom Seaver
The moment a person forms a theory, his imagination sees in every object only the traits which favor that theory.
Thomas Jefferson
Never had Parliament or the crown, or both together, operated in actuality as theory indicated sovereign powers should.
Bernard Bailyn
In short, both experience and economic theory imply that the US could now t to a more competitive dollar without experiencing either increased inflation or decreased economic growth.
Martin Feldstein
My theory of evolution is that Darwin was adopted.
Stephen Wright
Democracy is the theory that the common people know what they want, and deserve to get it good and hard.
H. L. Mencken