Those who live with insomnia and who consider sleep both an enemy and a gift will understand the following. Some of us cannot comprehend how anyone except the very good or those who have no conscience at all can sleep from dark to dawn without dreaming or waking. We hear William Blake's tiger padding softly through a green jungle, his stripes glowing, his whiskers spotted with gore. Psychoanalysis does no good. Neither does a health regimen that induces physical exhaustion. The only solution that is guaranteed is the one provided by our old friend Morpheus, who requires our souls in the bargain.