Of course--you know a lot.

How shouldn't you--and why ?" "'Why'?
Oh that's another affair! But you don't imagine what I know; I'm sure it's much more than you've a notion of.

That's the kind of thing now one IS--just except the little marvel of Aggie.

What on earth," the girl pursued, "do you take us for ?" "Oh it's all right!" breathed Mitchy, divinely pacific.
"I'm sure I don't know whether it is; I shouldn't wonder if it were in fact all wrong.

But what at least is certainly right is for one not to pretend anything else.