The basis of tragedy is man's helplessness against disease, war and death; the basis of comedy is man's helplessness against vanity (the vanity of love, greed, lust, power).
Bio: Walter Michael Miller, Jr. was an American science fiction writer. Today he is primarily known for A Canticle for Leibowitz, the only novel he published in his lifetime. Prior to its publication he was a prolific writer of short stories.