To quote the witch in Snow White "Who's the fittest of them all?" Who but those who think they are powerful enough to occupy colonies who supply raw materials to be shaped into manufactured articles, to be sold back to the colonies?
That is the definition of imperialism. It is the colonization by force of those unable to prevent the colonization. Imperialism is the creation of an empire by colonizing people that can't prevent their own subjugation.
Does that not sound like survival of the fittest to you?
Well he is basically letting serial killers go off onto the streets and into everyday peoples lives. They will involve themselves with people and eventually kill or cause harm to people again. They wont learn from there mistakes if they dont get punished for them.
He wanted himself to change as much as he wanted others to change as well, but he saw that it was a very difficult task to change oneself, and by seeing that, he understood the challenges he would face when changing the people.
