Lewis

We can rest contentedly in our sins and in our stupidities; and anyone who has watch gluttons shovelling down the most exquisite foods as if they did not know what they were eating, will admit that we can ignore even pleasure. But pain insists upon being attended to. God whispers to us in our pleasures, speaks in our conscience, but shouts in our pain: it is His megaphone to rouse a deaf world. —Business of Heaven, p. 242.