Humans like to think of themselves as unusual. We've got big brains that make it possible for us to think, and we think that we have free will and that our behavior can't be described by some mechanistic set of theorems or ideas. But even in terms of much of our behavior, we really aren't very different from other animals.
Economists often like startling theorems, results which seem to run counter to conventional wisdom.
A mathematician is a device for turning coffee into theorems.
Math does come easily to me, but I was always much more interested in what theorems imply about the world than in proving them.
A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.
The pursuit of pretty formulas and neat theorems can no doubt quickly degenerate into a silly vice, but so can the quest for austere generalities which are so very general indeed that they are incapable of application to any particular.
There are three signs of senility. The first sign is that a man forgets his theorems. The second sign is that he forgets to zip up. The third sign is that he forgets to zip down.
I have found a very great number of exceedingly beautiful theorems.
Young men should prove theorems, old men should write books.