I have asked, and attempted answers to, this question before. Yet it returns to me, why two of my closest companions should themselves have been friends. How could Nietzsche, the arch-anti-idealist, find himself drawn irresistibly to an avowed idealist such as Emerson? And the answer is, perhaps, that Emerson was no idealist. Let me explain.
“Considerations by the Way,” the modestly titled seventh chapter of The Conduct of Life, finds Emerson in a curious place. On the one hand, he would provide rules for the conduct of life. On the other hand,
That by which a man conquers in any passage, is a profound secret to every other being in the world, and it is only as he turns his back on us and on all men, and draws on this most private wisdom, that any good can come to him. What we have, therefore, to say of life, is rather description, or, if you please, celebration, than available rules. (1079)
The essay perhaps never overcomes this ambivalence, structurally: at times it seeks to provide such rules, yet it never commits fully to the task. Similarly, it is at times celebratory, but sometimes, perhaps, a bit weary. When Emerson suggests, in one of his rules, that cheerfulness is the most important element of health, one wonders whether he was fully cheerful in writing this essay. Yet the vigor of his thought comes through, and nowhere more than in his celebration (of sorts) of vice. It is in this respect that Emerson was no idealist.
In what is already a quite Nietzschean turn, Emerson lambasts the masses:
Masses are rude, lame, unmade, pernicious in their demands and influence, and need not to be flattered but to be schooled. I wish not to concede anything to them, but to tame, drill, divide, and break them up, and draw individuals out of them. The worst of charity is, that the lives you are asked to preserve are not worth preserving. Masses! the calamity is the masses. (1081)
Emerson does soften his tone, in a way that Nietzsche perhaps would not have:
To say then, the majority are wicked, means no malice, no bad heart in the observer, but, simply, that the majority are unripe, and have not yet come to themselves, do not yet know their opinion. That, if they knew it, is an oracle for them and for all. (1083)
The reason for this is that the masses do not think, or to rephrase the point, are not self-reliant. “The mass are animal, in pupilage, and near chimpanzee.” (1082) Kant made it a categorical duty of reason to treat all rational beings as ends in themselves, and not as means. Emerson is more or less Kantian, only he is stingier about whom he will consider rational: the thinker is an end, the masses mere means. “The rule is, we are used as brute atoms, until we think: then, we use all the rest.” (1082) That is why Emerson would break up masses, and find individuals in them. If many are lost, so be it: “Nature makes fifty poor melons for one that is good. […] In mankind, she is contented if she yields one master in a century.” (1081) “This is bold practice, and there are many failures to a good escape.” (1085)
The lesson to draw from this wastefulness of nature, and from the unripe state of the masses, is “the good of evil.” (1083) What follows is a several-page discussion of the good effects that are can be brought about only by “evil”, cruel, harsh means – the bleeding heart could never manage them. This lesson, writ large, also proves true of the individual:
In short, there is no man who is not at some time indebted to his vices, as no plant that is not fed from manures. We only insist that the man meliorate, and that the plant grow upward, and convert the base into the better nature. (1086)
In this, Emerson shows his willingness to see vice as the origin of all virtue. This is his anti-idealism. Here Nietzsche must enter. In Daybreak, his book on “the prejudices of morality,” Nietzsche begins with the ultimate prejudice: the purity of the good:
Supplemental rationality. – All things that live long are gradually so saturated with reason that their origin in unreason thereby becomes improbable. Does not almost every precise history of an origination impress our feelings as paradoxical and wantonly offensive? Does the good historian not, at bottom, constantly contradict? (§1, Hollingdale translation)
This lies at the heart of Nietzsche’s thought: that virtue originates in vice, that everything we now call good grew out of something we would call evil, and that the creation of new goods requires something evil. Nietzsche mature works deal extensively with tracing out lineages of such origin – of course in On the Genealogy of Morality, but really in every work from Daybreak on, except perhaps Zarathustra.
It is the prejudice of morality to deny such origins, to take them as basically contradictions. To take the good as pure as unmixed, as incapable of originating in the base materiality of this world – that, for Nietzsche, is idealism (one form of it, anyway). And it is just this form that Emerson rejects. I have noted before that Emerson preferred not to transcend dualisms, nor to quite embrace them, but to “reconcile” them without losing their antagonism. He prefers to see the virtuous grow out of the vicious, but would take pure vice before pure virtue.
Of course, Emerson never analyzed these origins in the same detail as Nietzsche. That is, perhaps, part of why Nietzsche lamented that Emerson had never “gone through some strict discipline, a really scientific education. As it is, in Emerson we have lost a philosopher.” (Quoted in Kaufmann’s introduction to his translation of The Gay Science.) Yet he could still call him “the author who has been richest in ideas in this century” and claim that “I may not praise it, it is too close to me.” (Same)
If I am right, one of the ideas that Nietzsche found (I do not claim for the first time) in the rich well of Emerson, was the low origin of all high things.