The primary function of mental pain, says Lewis, is to force our misdirectedness on our attention. But just as it belongs to our fallen state to be blind to holiness until we suffer the consequences of sin, and blind to a higher good until natural satisfactions are snatched from us; so equally it belongs to our state that we cannot achieve disinterestedness until it costs us pain.
Jocelyn Gibb, Light on C. S. Lewis
christianity, cs-lewis, suffering