Boy, yes yes, lots of good things in there. I wholeheartedly agree.
Literal truth-telling and finding fault with a culprit for his good are out of place in an essay, where everything should be for our good and rather for eternity than for the March number of the Fortnightly Review.
I will need to read back on this several times to know what she means. She’s not saying that criticism is out of place—she engages in it the very paragraph next. (Although I confess that I am tiring of the constant flow of cultural critique. There has to be more than just that to an essay.)
I think writing for ‘eternity not just March’ could be an expression that stays with me.