I notice she also touches on memes and belief in belief at the end:
“Whose premises?” cried Trost, turning on me with some fierceness. “You don’t mean to call them mine, I hope.
“Heaven forbid! They seem to be flying about in the air with other germs, and have found a sort of nidus among my melancholy fancies. Nobody really holds them. They bear the same relation to real belief as walking on the head for a show does to running away from an explosion or walking fast to catch the train.”
An excellent find!
I notice she also touches on memes and belief in belief at the end: