Esta orders that part of himself, or that spell, or whatever, to shut up.
And gets to the point.
"But those details may not matter. I don't think the way out of this is that you find a flaw in the work that an [Outer God] did to invent or project a dreamworld that would sound plausible to you. That can provide a [circumstance bonus] to a [Will save], but it is not the thing that drives the ability to [disbelieve an illusion], it is not the core of a [Will save], it is a matter of wanting to see what is there, to assert your real self against the things that are trying to [enchant] you, [compel] you, [transform] you, modify your memories, blind or alter your perceptions. And now that I come to say it, if I were wiser I would have had you practice that, against such lesser spells as might be resisted by a [Will save], if your memories of your practice in it were eliminated."
"But the core of it is very simple. You assert yourself against the forces that alter you, and, in this case, will yourself to wake up from the dream."