For what does the author seem to be searching by taking this job?

He seems to be looking for a sense of nature that he cannot find when he is around people and society. He is looking for a depth and tenor of the wilderness that is imperceptible to most people, and even to himself in most circumstances. He seems to feel there is more to be gotten from life than just being a human living in a culture of other humans. He is definitely on a mission to find a certain quality of "mysticism in which the naked self merges with a non-human world and yet somehow survives still intact, individual." In other words he wants to become one with nature without losing his sense of self.