The Great Perhaps
It was said by Francois Rabelais, and made more commonly known when mentioned by Miles Halter in John Green's "Looking for Alaska". It's a mystery about possibly the question of an existence of an afterlife, and The Great Perhaps sets the plot in motion.
"I go to seek a Great Perhaps." -F.R.
"That's why I'm going. So I don't have to wait until I die to start seeking a Great Perhaps." -M.H.
Before you die... "It's The Great Perhaps!" -You
"That's why I'm going. So I don't have to wait until I die to start seeking a Great Perhaps." -M.H.
Before you die... "It's The Great Perhaps!" -You