Answer: He feels tied to the land and to the weather in which he grew up.
In this excerpt, the author describes how he found it difficult sometimes to be constrained by the house after enjoying all the space outside. He does not suffer from depression, as depression is a chemical imbalance, and the author says his sadness only lasted a while and was due to confinement. He also does not feel confined by all the space, but by the lack of it. Finally, he does not claim that summer is an illusion, simply that seasons change. However, the fact that he feels so differently when inside the house shows how comfortable and connected he feels to the land he grew up in.
