Paul Erdős

“Television is something the Russians invented to destroy American education.”

“Suppose aliens invade the earth and threaten to obliterate it in a year's time unless human beings can find the Ramsey number for red five and blue five. We could marshal the world's best minds and fastest computers, and within a year we could probably calculate the value. If the aliens demanded the Ramsey number for red six and blue six, however, we would have no choice but to launch a preemptive attack.”

“Another roof, another proof.”

“I'm not competent to judge. But no doubt he was a great man.”

“I think that, as {{w|Saharon Shelah|Shelah}}, a very clever young Israeli mathematician, once said, "I am an opportunist. I do what I can do." If there is anything in number theory that I can do, I certainly do it. But you see some of the problems in number theory are enormously difficult and many of these classic problems are very, very hard to make any progress in.”