inter- a prefix occurring in loanwords from Latin, where it meant “between,” “among,” “in the midst of,” “mutually,” “reciprocally,” “together,” “during” (intercept; interest); on this model, used in the formation of compound words (intercom; interdepartmental).
Im assuming youre talking about a famous Frankenstein poem. He does so because he is desperate for a friend. The old man is blind so he feels that the monster is not much dIfferent from any human.
The narrator calls Della and Jim "the most wise" for each giving up their most valuable items for each other even though giving up their most precious possession ruined one another's gift.