Wicked envy and jealousy were not sufficient motives in the eyes of Bulthaupt and d'Albert for the first fratricide; there must be an infusion of psychology and modern philosophy. Abel is an optimist, an idealist, a contented dreamer, joying in the loveliness of life and nature; Cain, a pessimist, a morose brooder, for whom life contained no beautiful illusions. He gets up from his couch in the night to question the right of God to create man for suffering. He is answered by Lucifer, who proclaims himself the benefactor of the family in having rescued them from the slothful existence of Eden and given them a Redeemer. The devil discourses on the delightful ministrations of that Redeemer, whose name is Death. In the morning Abel arises and as he offers his sacrifice he hymns the sacred mystery of life and turns a deaf ear to the new-found gospel of his brother. An inspiring thought comes to Cain; by killing Abel and destroying himself he will save future generations from the sufferings to which they are doomed. With this benevolent purpose in mind he commits the murder. The blow has scarcely been struck before a multitude of spirit-voices call his name and God thunders the question: "Where is Abel, thy brother?" Adam comes from his cave and looks upon the scene with horror. Now Cain realizes that his work is less than half done: he is himself still alive and so is his son Enoch. He rushes forward to kill his child, but the mother throws herself between, and Cain discovers that he is not strong-willed enough to carry out his design. God's curse condemns him to eternal unrest, and while the elements rage around him Cain goes forth into the mountain wilderness.