And you have another rationalist, one not sad or submissive, like Spinoza, but rebellious, and though concealing a despair not less bitter, making a hypocritical pretence of light-heartedness, you have Nietzsche, who discovered mathematically (!!!) that counterfeit of the immortality of the soul which is called "eternal recurrence," and which is in fact the most stupendous tragi-comedy or comi-tragedy. The number of atoms or irreducible primary elements being finite and the universe eternal, a combination identical with that which at present exists must at some future time be reproduced, and therefore that which now is must be repeated an infinite number of times. This is evident, and just as I shall live again the life that I am now living, so I have already lived it before an infinite number of times, for there is an eternity that stretches into the past—a parte ante—just as there will be one stretching into the future—a parte post. But, unfortunately, it happens that I remember none of my previous existences, and perhaps it is impossible that I should remember them, for two things absolutely and completely identical are but one. Instead of supposing that we live in a finite universe, composed of a finite number of irreducible primary elements, suppose that we live in an infinite universe, without limits in space—which concrete infinity is not less inconceivable than the concrete eternity in time—then it will follow that this system of ours, that of the Milky Way, is repeated an infinite number of times in the infinite of space, and that therefore I am now living an infinite number of lives, all exactly identical. A jest, as you see, but one not less comic—that is to say, not less tragic—than that of Nietzsche, that of the laughing lion. And why does the lion laugh? I think he laughs with rage, because he can never succeed in finding consolation in the thought that he has been the same lion before and is destined to be the same lion again.
But if Spinoza and Nietzsche were indeed both rationalists, each after his own manner, they were not spiritual eunuchs; they had heart, feeling, and, above all, hunger, a mad hunger for eternity, for immortality. The physical eunuch does not feel the need of reproducing himself carnally, in the body, and neither does the spiritual eunuch feel the hunger for self-perpetuation.
Certain it is that there are some who assert that reason suffices them, and they counsel us to desist from seeking to penetrate into the impenetrable. But of those who say that they have no need of any faith in an eternal personal life to furnish them with incentives to living and motives for action, I know not well how to think. A man blind from birth may also assure us that he feels no great longing to enjoy the world of sight nor suffers any great anguish from not having enjoyed it, and we must needs believe him, for what is wholly unknown cannot be the object of desire—nihil volitum quin præcognitum, there can be no volition save of things already known. But I cannot be persuaded that he who has once in his life, either in his youth or for some other brief space of time, cherished the belief in the immortality of the soul, will ever find peace without it. And of this sort of blindness from birth there are but few instances among us, and then only by a kind of strange aberration. For the merely and exclusively rational man is an aberration and nothing but an aberration.
More sincere, much more sincere, are those who say: "We must not talk about it, for in talking about it we only waste our time and weaken our will; let us do our duty here and hereafter let come what may." But this sincerity hides a yet deeper insincerity. May it perhaps be that by saying "We must not talk about it," they succeed in not thinking about it? Our will is weakened? And what then? We lose the capacity for human action? And what then? It is very convenient to tell a man whom a fatal disease condemns to an early death, and who knows it, not to think about it.
Meglio oprando obliar, senzá indagarlo,
Questo enorme mister del universo!
"Better to work and to forget and not to probe into this vast mystery of the universe!" Carducci wrote in his Idilio Maremmano, the same Carducci who at the close of his ode Sul Monte Mario tells us how the earth, the mother of the fugitive soul, must roll its burden of glory and sorrow round the sun "until, worn out beneath the equator, mocked by the last flames of dying heat, the exhausted human race is reduced to a single man and woman, who, standing in the midst of dead woods, surrounded by sheer mountains, livid, with glassy eyes watch thee, O sun, set across the immense frozen waste."
But is it possible for us to give ourselves to any serious and lasting work, forgetting the vast mystery of the universe and abandoning all attempt to understand it? Is it possible to contemplate the vast All with a serene soul, in the spirit of the Lucretian piety, if we are conscious of the thought that a time must come when this All will no longer be reflected in any human consciousness?
Cain, in Byron's poem, asks of Lucifer, the prince of the intellectuals, "Are ye happy?" and Lucifer replies, "We are mighty." Cain questions again, "Are ye happy?" and then the great Intellectual says to him: "No; art thou?" And further on, this same Lucifer says to Adah, the sister and wife of Cain: "Choose betwixt love and knowledge—since there is no other choice." And in the same stupendous poem, when Cain says that the tree of the knowledge of good and evil was a lying tree, for "we know nothing; at least it promised knowledge at the price of death," Lucifer answers him: "It may be death leads to the highest knowledge"—that is to say, to nothingness.
To this word knowledge which Lord Byron uses in the above quotations, the Spanish ciencia, the French science, the German Wissenschaft, is often opposed the word wisdom, sabiduria, sagesse, Weisheit.