A mathematician is a device for turning coffee into theorems.
Finally I am becoming stupider no more.
It will be another million years, at least, before we understand the primes.
There'll be plenty of time to rest in the grave.
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.
Another roof, another proof.