Women and men are moral creatures. Psychology, ethology, and the arts all attest to this. Yet, as confrontation with the problem of nuclear weapons shows, our fundamental sense of morality does not guarantee ethical behavior either in relationship to ourselves, to others, or to the general environment. On its own this moral sense is inadequate; there has to be some dialogue and interplay with a different kind of morality. This second morality—equally inborn, easy to recognize, but hard to define accurately—generates tolerance, forgiveness, openness, and an ingenious approach to problems. I want to call it moral imagination and to distinguish it from the first, fundamental, ineluctable morality which, in its certitude, I would like to designate original morality. The reference to original sin is deliberate.