“Man is nothing without an object. The great models of humanity, such men as reveal to us what man is capable of, have attested the truth of this proposition by their lives. They had only one dominant passion—the realisation of the aim which was the essential object of their activity. But the object to which a subject essentially, necessarily relates, is nothing else than this subject’s own, but objective, nature. If it be an object common to several individuals of the same species, but under various conditions, it is still, at least as to the form under which it presents itself to each of them according to their respective modifications, their own, but objective, nature. Thus the Sun is the common object of the planets, but it is an object to Mercury, to Venus, to Saturn, to Uranus, under other conditions than to the Earth. Each planet has its own sun. The Sun which lights and warms Uranus has no physical (only an astronomical, scientific) existence for the Earth; and not only does the Sun appear different, but it really is another sun on Uranus than on the Earth. The relation of the Sun to the Earth is therefore at the same time a relation of the Earth to itself, or to its own nature, for the measure of the size and of the intensity of light which the Sun possesses as the object of the Earth is the measure of the distance which determines the peculiar nature of the Earth. Hence each planet has in its sun the mirror of its own nature.”