Symbol of the House

The story of Julio Cortazar shows lots of symbols. I personally couldn't figure out what the house is. It may be a symbol of the two main character's mind, but somehow the things inside the house doesn't quite fit into place. To be honest, this story made me wonder alot of things. There are things from the money, the yarn, and the french books and the trips. The French books and the trips could be used as a pathway of traveling between reality and his sanity. If we are using the house as his mind. As for the sister, the yarn could also be the one thing that entact her and the actual world. By knitting, she holds onto something that is true in her hands and continue to knit and knit. The brothor walks out the door, be intact of reality and goes down to the book store. The book store could means several diffrent things. A actual book store, or the book store means the society. Where he talks to people and gets no answer. From the answer of no french book was founded, it may means that his words doesn't get any reply from the society. His travels are get the yarn, murmur on the street and people thinks his insane and regard him out.