The first theft marked Buck as fit to survive in the hostile Northland environment. It marked his adaptability, his capacity to adjust himself to changing conditions, the lack of which would have meant swift and terrible death. It marked, further, the decay or going to pieces of his moral nature, a vain thing and a handicap in the ruthless struggle for existence.
Jack LondonMan is man because he chanced to develop intelligence instead of instinct; otherwise he would to this day have remained among the anthropoid apes. He has turned away from nature, become unnatural, as it were, disliked the earth upon which he found himself, and changed the face of it somewhat to his liking.
Jack London