A rational man does not forget that life is the source of all values and, as such, a common bond among living beings (as against inanimate matter), that other men are potentially able to achieve the same virtues as his own and thus be of enormous value to him. This does not mean that he regards human lives as interchangeable with his own. He recognizes the fact that his own life is the source, not only of all his values, but of his capacity to value. Therefore, the value he grants to others is only a consequence, an extension, a secondary projection of the primary value which is himself.
