To remind men that they are not dead yet

And because I like Chesterton's respect for the poets and need to keep this:

“I don't deny," he said, "that there should be priests to remind men that they will one day die. I only say that at certain strange epochs it is necessary to have another kind of priests, called poets, actually to remind men that they are not dead yet.”

~ G.K. Chesterton, Manalive