Zarathustra's Rebuttle of Impermanence

Thestra describes life in terms of will to power, which is apparently a consistent, enduring principle. Wouldn't that be a kind of permanence? Or perhaps we could consider the eternalization of our lives within the context of the eternal recurrence. And so there are endless ways to interpret this. But i think it's digressions like these, and thus spoke zarathustra, that can throw off some readers. I mean, when asked to explain himself, he explains why he can't really explain himself.