The science of religion, on the other hand, of religion considered as an individual and social psychic phenomenon irrespective of the transcendental objective validity of religious affirmations, is a science which, in explaining the origin of the belief that the soul is something that can live disjoined from the body, has destroyed the rationality of this belief. However much the religious man may repeat with Schleiermacher, "Science can teach thee nothing; it is for science to learn from thee," inwardly he thinks otherwise. From whatever side the matter is regarded, it is always found that reason confronts our longing for personal immortality and contradicts it. And the truth is, in all strictness, that reason is the enemy of life. A terrible thing is intelligence. It tends to death as memory tends to stability. The living, the absolutely unstable, the absolutely individual, is, strictly, unintelligible. Logic tends to reduce everything to identities and genera, to each representation having no more than one single and self-same content in whatever place, time, or relation it may occur to us. And there is nothing that remains the same for two successive moments of its existence. My idea of God is different each time that I conceive it. Identity, which is death, is the goal of the intellect. The mind seeks what is dead, for what is living escapes it; it seeks to congeal the flowing stream in blocks of ice; it seeks to arrest it. In order to analyze a body it is necessary to extenuate or destroy it. In order to understand anything it is necessary to kill it, to lay it out rigid in the mind. Science is a cemetery of dead ideas, even though life may issue from them. Worms also feed upon corpses. My own thoughts, tumultuous and agitated in the innermost recesses of my soul, once they are torn from their roots in the heart, poured out on to this paper and there fixed in unalterable shape, are already only the corpses of thoughts. How, then, shall reason open its portals to the revelation of life? It is a tragic combat--it is the very essence of tragedy--this combat of life with reason. And truth? Is truth something that is lived or that is comprehended? It is only necessary to read the terrible _Parmenides_ of Plato to arrive at his tragic conclusion that "the one is and is not, and both itself and others, in relation to themselves and one another, are and are not, and appear to be and appear not to be." All that is vital is irrational, and all that is rational is anti-vital, for reason is essentially sceptical. The rational, in effect, is simply the relational; reason is limited to relating irrational elements. Mathematics is the only perfect science, inasmuch as it adds, subtracts, multiplies, and divides numbers, but not real and substantial things, inasmuch as it is the most formal of the sciences. Who can extract the cube root of an ash-tree?