A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.

Einstein was wrong when he said, 'God does not play dice'. Consideration of black holes suggests, not only that God does play dice, but that he sometimes confuses us by throwing them where they can't be seen

"The only limit to our realization of tomorrow is our doubts of today."

"The poem is a place where the unspeakable can be spoken."

The digital revolution is far more significant than the invention of writing or even of printing.