From Part II Chapter XIII of E M Forster's Passage to India, on relationships:

Mrs. Moore pushed up the shutters and looked out. She had brought Ronny and Adela together by their mutual wish, but really she could not advise them further. She felt increasingly (vision or nightmare?) that, though people are important, the relations between them are not, and that in particular too much fuss has been made over marriage; centuries of carnal embracement, yet man is no nearer to understanding man. And to-day she felt this with such force that it seemed itself a relationship, itself a person who was trying to take hold of her hand.

^z - 2017-10-22