[When asked why are numbers beautiful?] It’s like asking why is Ludwig van Beethoven’s Ninth Symphony beautiful. If you don't see why, someone can't tell you. I know numbers are beautiful. If they aren't beautiful, nothing is.
A mathematician is a device for turning coffee into theorems.
Finally I'm becoming stupider no more.
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.
Property is a nuisance.
God may not play dice with the universe, but something strange is going on with the prime numbers.