If I recall correctly, it’s a Kotzker vort (I may be wrong, it’s happened before…). “
Sounds like a DT from the Kotzker. I admire his words so much. There was a great DT I had heard (and hope I am not mangling, as it was long ago) about him having his talmidim in his succah and asking if they believed the Ushpizin were there. They all nodded yes, of course they believed, to which he responded that he did NOT believe it. He KNEW it, because he could see their neshamos all present. And that is how we are supposed to feel when in our own succahs. Our emunah should be so profound, that we KNOW and not merely believe.