What quote sums up Alex's desire to isolate himself from the world?

"McCandless was thrilled to be on his way north, and he was relieved as well—relieved that he had again evaded the impending threat of human intimacy, of friendship, and all the messy emotional baggage that comes with it. He had fled the claustrophobic confines of his family. He’d successfully kept Jan Burres and Wayne Westerberg at arm’s length, flitting out of their lives before anything was expected of him. And now he’d slipped painlessly out of Ron Franz’s life as well."