“The things Altenberg writes, we already know them anyhow!”
Because he writes in such a way as to give you the impression that you’ve always known it anyhow.
But it’s only through him that you know that you’ve always known it anyhow, that is, ought to have known it!
You’re embarrassed in front of yourself, to have fathomed it only now thanks to that crazy eccentric Altenberg!
There’s only one way out:
“Well for crying out loud, I already thought that, knew that, long ago, do you have to spell everything out?! That Altenberg fellow is a nut, he has the need to enlighten!”
Do I really?! It’s fine with me if the others fumble and falter on their own foolishness.