The same law holds when we approach our highest and most sacred conceptions. It was recognised by enlightened philosophers and theologians before Vaihinger that the difference between body and soul is not different from that between matter and force,—a provisional and useful distinction,—that light and darkness, life and death, are abstractions, necessary, indeed, but in their application to reality always to be used with precaution. On the threshold of the moral world we meet the idea of Freedom, “one of the weightiest conceptions man has ever formed,” once a dogma, in course of time an hypothesis, now in the eyes of many a fiction; yet we cannot do without it, even although we may be firmly convinced that our acts are determined by laws that cannot be broken. Many other great conceptions have tended to follow the same course. God, the Soul, Immortality, the Moral World-Order. The critical hearers understand what is meant when these great words are used, and if the uncritical misunderstand, that, adds Vaihinger, may sometimes be also useful. For these things are Ideals, and all Ideals are, logically speaking, fictions. As Science leads to the Imaginary, so Life leads to the Impossible; without them we cannot reach the heights we are born to scale. “Taken literally, however, our most valuable conceptions are worthless.” When we review the vast field which Vaihinger summarises, we find that thinking and existing must ever be on two different planes. The attempt of Hegel and his followers to transform subjective processes into objective world-processes, Vaihinger maintains, will not work out. The Thing-in-Itself, the Absolute, remains a fiction, though the ultimate and most necessary fiction, for without it representation would be unintelligible. We can only regard reality as a Heraclitean flux of happening—though Vaihinger fails to point out that this “reality” also can only be an image or symbol—and our thinking would itself be fluid if it were not that by fiction we obtain imaginary standpoints and boundaries by which to gain control of the flow of reality. It is the special art and object of thinking to attain existence by quite other methods than that of existence itself. But the wish by so doing to understand the world is both unrealisable and foolish, for we are only trying to comprehend our own fictions. We can never solve the so-called world-riddle because what seem riddles to us are merely the contradictions we have ourselves created. Yet, though the way of thinking cannot be the way of being, since they stand on such different foundations, thinking always has a kind of parallelism with being, and though we make our reckoning with a reality that we falsify, yet the practical result tends to come out right. Just because thinking is different from reality, its forms must also be different in order to correspond with reality. Our conceptions, our conventional signs, have a