Emet-Selch is clearly not inclined to fill the silence on his own. Then and now, he's always tended towards being solitary.

"...'Tis not aether I command any longer but this world's 'bios'. Using magic depletes it, and I cannot regenerate it as easily as I could on our star."

He glances briefly towards the grove. "I replenished some by partaking of the waters here thanks to the generosity of the spirits. But it isn't enough."