He said that I was clearly a very logical person, so he was surprised that I should think like this because it wasn't very logical.

I said that I liked things to be in a nice order. And one way of things being in a nice order was to be logical. Especially if those things were numbers or an argument. But there were other ways of putting things in a nice order. And that was why I had Good Days and Black Days. [...]

I said that when Father got up in the morning he always put his trousers on before he put his socks on and it wasn't logical but he always did it that way, because he liked things in a nice order, too. Also whenever he went upstairs he went up two at a time always starting with his right foot. (47.2-4)