C.S. Lewis on Suffering & Evil
"Until the evil man finds evil unmistakably present in his existence, in the form of pain, he is enclosed in illusion. . . . No doubt Pain as God's megaphone is a terrible instrument; it may lead to final and unrepented rebellion. But it gives the only opportunity the bad man can have for amendment. It removes the veil; it plants the flag of truth within the fortress of a rebel soul."
The Problem of Pain p. 95