Time travel is increasingly regarded as a menace. History is being polluted. — Douglas Adams

It is a mistake to think you can solve any major problems just with potatoes.

He hoped and prayed that there wasn't an afterlife. Then he realized there was a contradiction involved here and merely hoped that there wasn't an afterlife.

“I'm afraid,” he said at last, “that the Question and the Answer are mutually exclusive. Knowledge of one logically precludes knowledge of the other. It is impossible that both can ever be known about the same Universe.”