Alison Page wrote:
But you could imagine that deep inside, there is some sort of fellow-feeling with Travis, a deep rage against everything. And he would rationalise this away, and rationalise away his reluctance to kill his shadow.
Hmm. He does say in "Duel" that one of his reasons for not killing Travis is that he would have enjoyed it... Which maybe *does* make him more akin to Travis than he would like. Maybe refusing to kill Travis is Blake's way of reassuring himself that he hasn't *become* Travis.