The first condition necessary to the advent of sexual reproduction is a prejudice in the organism favoring preservation of its genetic essence. It is in the stylization of this prejudice that may arise the principle of the sanctity of life : the belief that a supernatural mandate underwrites all existence, even in its most incipient stages. In fact, this prejudice is just one possibility among several. But it is a necessary prejudice which must be accepted by the organism if the existence of the organism is to remain a priority for it and the species persist. For one may well imagine, according to the dictates of variability associated with all nature, several false starts in the development of an organism in which, all the other basic properties of life having been assembled (organic compounds, organizational complexity, the elements of volition), every trace of the organism immediately perished for want of this prejudice.