in 2 to 4 sentences explain, chris's beliefs about god?

People believe in God because the world is very complicated and they think it is very unlikely that anything as complicated as a flying squirrel or the human eye or a brain could happen by chance. But they should think logically and if they thought logically they would see that they can only ask this question because it has already happened and they exist. And there are billions of planets where there is no life, but there is no one on those planets with brains to notice.

Christopher, p. 203

Christopher's clear-sightedness here is quite brutal and can be seen as an example of his relative insensitivity to other the way other people view the world. At the same time, his argument here is also a very sensible one and one that is difficult to argue with - we see therefore how his logical relationship with the world can be at once alienating as well as crystal clear.