For somebody who knows relatively little mathematics, I have a hell of a lot of math books.
That is all.
OK, maybe not quite all.
My son, who is both wise and occasionally acerbic, once said: "I think you have so many books because you want to convince people that you are smart."
I thought about it for a while, and replied: "No, I think I'm trying convince myself that I'm smart." Or maybe just feed the fantasy that I will someday understand all that stuff.