001950 contains the awkward linguistic formation cata(ptcha)gorically, which is really fucking difficult to pronounce.
It gives us a first glimpse at the face of someone who will shortly become an important, enduring character, Nana Egbert, aka Jane. Her picture, as well as her urn and ashes rest above the mantlepiece as John gazes at the fire.
As he gazes he finds himself contemplating the quotation:
“The moon’s an arrant thief, and her pale fire she snatches from the sun.” -Mark Twain
You are almost certain Mark Twain said that.
It is in fact a very obscure Shakespeare quote, from the play Timon of Athens.
This is the first, but certainly not the last time that a quote appears misattributed. I’m fairly certain every time a quote is used, its misattributed. Its an interesting narrative technique and honestly I think it allows a scene to have a little contemplative dignity, and still be funny.