see heat, and every difference in temperature within the moon renders objects visible to it.

“The iris was quite a new organ to the Grand Lunar. For a time he amused himself by flashing his rays into my face and watching my pupils contract. As a consequence, I was dazzled and blinded for some little time.⁠ ⁠…

“But in spite of that discomfort I found something reassuring by insensible degrees in the rationality of this business of question and answer. I could shut my eyes, think of my answer, and almost forget that the Grand Lunar has no face.⁠ ⁠…