There'll be plenty of time to rest in the grave.
Property is a nuisance.
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.
Every human activity, good or bad, except mathematics, must come to an end.
Mathematics is not yet ready for such problems.
Mathematics is the surest way to immortality. If you make a big discovery in mathematics, you will be remembered after everyone else will be forgotten