At this point the Innovator may ask why, after all, selfishness should be more ‘rational’ or ‘intelligent’ than altruism. The question is welcome. If by Reason we mean the process actually employed by Gaius and Titius when engaged in debunking (that is, the connecting by inference of propositions, ultimately derived from sense data, with further propositions), then the answer must be that a refusal to sacrifice oneself is no more rational than a consent to do so. And no less rational. Neither choice is rational—or irrational—at all. From propositions about fact alone no practical conclusion can ever be drawn. This will preserve society cannot lead to do this except by the mediation of society ought to be preserved. This will cost you your life cannot lead directly to do not do this. It can lead to it only through a felt desire or an acknowledged duty of self-preservation.