The aristic thrust and conception of "contra natura" lie in our power finitely to extend our self-mastery, to GROW in will and spirit; but as Nietzsche repeatedly teaches in ZARATHUSTRA, such ends must be WILLABLE, achievable. There is nothing to be learned from the human-all-too-human impulse for self-deification or wholesale transcendence over the vicissitudes of life -- even though this aims at something contra natura, it is not truly concretely WILLABLE, it is just a fantasy of our imagination. We cannot BECOME a God. But we can learn to hold our deepest passions in check for the sake of a higher morality, if indeed we are aristoi. Willing and valuing must become an art, must be made consonant or coherent with the fabric of our natures. Mere megalomaniacal extravagance does not truly increase our charge of concentrated power; on the contrary it fires up our ambition with inflationary abstractions that give no traction or purchase to our actual wills. That way lies radical frustration and a metaphysics of depression: an inevitable life-pattern of self-delusion, as we suffer over and over from the necessity that "it would not be better if men got what they wanted," and yet will not permit ourselves ever to see or to learn anything from this self-deception and self-betrayal.
Just consider for a minute: look at the Many, the majoritarian cattle in every form of society who are governed by their own irrationalist beliefs and psychological needs and forces of social coordination with others (doxai). Taking control of the Many's always turbulent irrationalisms is child's play. They are the strata, the type most susceptible to enslavement not for accidental but for essential reasons. There is nothing whatsoever difficult in mastering or controlling them, and therefore it cannot be respected as any sort of value, especially not an aristic value. Values as ZARATHUSTRA argues are every people's ultimate concept of what is most difficult of all for them. What Nietzsche esteems, what in modern circumstances has come to seem "superhuman," is the aristic drive to accomplish what one judiciously recognizes as most difficult for oneself. "Power" is the natural reward or concomitant of those who struggle aristically to achieve the most contra-natural thing of all for human beings, self-mastery, the harnessing and knowing of the obscure forces that no one is in control of by birthright. There is no honor or valor in triumphing over defenseless and witless mentalities, regardless of the mass-numbers involved or the prodigious "power" (in the modern -- banausic -- sense) that results.
The essence of human spirit would seem to be something static to Buddha: if it has an internal imperative to become something else (something higher or more spiritual), what self-disequilibrium could it suffer from that could nonetheless still be considered spiritual in Buddha's eyes? Nietzsche sought to explain this imperative for self-acculturation, for achieving rational self-mastery, for spiritualization, for self-radicalization and self-sublimation, by means of a "Will to Power" far more comprehensive than moderns (with only the cheapest and most facile grasp of "power") can understand. As a philhellene Nietzsche perceives and respects what the Greeks took for granted, that "power" above all else must be self-reflexive, an expression of aristic self-moderation (their anti-hybristic ethos and its correlative contempt for idiotia): "power" to the Greeks is moral and philosophical and cultural and political authority because it expresses itself in the hardest thing of all for humans to achieve, self-mastery.
The idea that we are “stewards of the earth” is another symptom of human arrogance. Imagine yourself with the task of overseeing your body’s physical processes. Do you understand the way it works well enough to keep all its systems in operation? Can you make your kidneys function? . . . Are you conscious of the blood flow through your arteries? . . . We are unconscious of most of our body’s processes, thank goodness, because we’d screw it up if we weren’t. The human body is so complex, with so many parts. . . . The idea that we are consciously caretaking such a large and mysterious system is ludicrous.