I'd say there isn't much to life at all that is truly permanent. But I can see how that applies specifically to this world.

[He had only come to accept death as true permanence. And that was only after his attempt to make Gelda's life permanent had failed. This world was already challenging and undermining that core philosophy in so many ways.]

I suppose that I can't be displeased that she strove for some sort of happiness here, despite all that.