Future of science. To the man who works and searches in it, science gives much pleasure; to the man who learns its results, very little. But since all important scientific truths must eventually become everyday and commonplace, even this small amount of pleasure ceases; just as we have long ago ceased to enjoy learning the admirable multiplication tables. Now, if science produces ever less joy in itself and takes ever greater joy in casting suspicion on the comforts of metaphysics, religion, and art, then the greatest source of pleasure, to which mankind owes almost its whole humanity, is impoverished. Therefore a higher culture must give man a double brain, two brain chambers, as it were, one to experience science, and one to experience nonscience. Lying next to one another, without confusion, separable, self-contained: our health demands this. In the one domain lies the source of strength, in the other the regulator. Illusions, biases, passions must give heat; with the help of scientific knowledge, the pernicious and dangerous consequences of overheating must be prevented.
If this demand made by higher culture is not satisfied, we can almost certainly predict the further course of human development: interest in truth will cease, the less it gives pleasure; illusion, error, and fantasies, because they are linked with pleasure, will reconquer their former territory step by step; the ruin of the sciences and relapse into barbarism follow next. Mankind will have to begin to weave its cloth from the beginning again, after having, like Penelope, destroyed it in the night. But who will guarantee that we will keep finding the strength to do so?
— Nietzsche, Human, All Too Human
Nietzsche sounds surprisingly close here to Isaiah Berlin’s later picture of modernity. He sees that science, criticism, and truthfulness are indispensable, but also that human beings cannot live by demystification alone. Art, religion, metaphysics, passion, illusion — these may be intellectually suspect, yet they supply warmth, motive, and psychic cohesion. A higher culture would somehow preserve both: the discipline of science and the heat of nonscience. That’s very close to Berlin’s sense that our civilization inherits rival goods from Enlightenment and Romanticism alike, and that neither can simply abolish the other. The tragic note is that this balance is not a settled synthesis but a permanent strain. We do not solve the conflict; we merely endure it, or fail to.
Nietzsche’s image of “double brain chambers” is both striking and hopelessly optimistic. It imagines a mind neatly built for compartmentalization: truth in one chamber, life-giving illusion in the other, each kept separate but cooperative, each doing its proper work. Fine in theory, but human beings aren’t like that. We are less like a feat of mechanical engineering than a stew pot, with scientific claims, myths, political passions, inherited loyalties, utopian fantasies, and resentments all simmering together and threatening to boil over. Our balance, when it exists at all, is less the poise of an ballet dancer than the arc of a pendulum: from far away, there may be a predictable, constrained range of motion; on the ground, where we actually live, there’s a ceaseless lurch from one extreme to the other.


