Let us, however, carry our objective and unprejudiced consideration of nature still further. If I kill a living creature, whether a dog, a bird, a frog, or even only an insect, it is really inconceivable that this being, or rather the original force by virtue of which such a marvellous phenomenon exhibited itself just the moment before, in its full energy and love of life, should have been annihilated by my wicked or thoughtless act. And again, on the other hand, the millions of animals of every kind which come into existence every moment, in infinite variety, full of force and activity, can never, before the act of their generation, have been nothing at all, and have attained from nothing to an absolute beginning. If now in this way I see one of these withdraw itself from my sight, without me knowing where it goes, and another appear without me knowing whence it comes; if, moreover, both have the same form, the same nature, the same character, and only not the same matter, which yet during their existence they continually throw off and renew; then certainly the assumption, that that which vanishes and that which appears in its place are one and the same, which has only experienced a slight alteration, a renewal of the form of its existence, and that consequently death is for the species what sleep is for the individual; this assumption, I say, lies so close at hand that it is impossible not to light upon it, unless the mind, perverted in early youth by the imprinting of false views, hurries it out of the way, even from a distance, with superstitious fear. But the opposite assumption that the birth of an animal is an arising out of nothing, and accordingly that its death is its absolute annihilation, and this with the further addition that man, who has also originated out of nothing, has yet an individual, endless existence, and indeed a conscious existence, while the dog, the ape, the elephant, are annihilated by death, is really something against which the healthy mind revolts and which it must regard as absurd. If, as is sufficiently often repeated, the comparison of the results of a system with the utterances of the healthy mind is supposed to be a touchstone of its truth, I wish the adherents of the system which was handed down from Descartes to the pre‐Kantian eclectics, nay, which even now is still the prevailing view of the great majority of cultured people in Europe, would apply this touchstone here. Throughout and everywhere the true symbol of nature is the circle, because it is the schema or type of recurrence. This is, in fact, the most universal form in nature, which it carries out in everything, from the course of the stars down to the death and the genesis of organised beings, and by which alone, in the ceaseless stream of time, and its content, a permanent existence, _i.e._, a nature, becomes possible.