When I was 5 years old, I heard my dad mention UFO. I was like 'what's a UFO?' From that point onwards it's been UFO'S, UFO'S, UFO'S. I became absolutely obsessed. It was in my dad's collection that I nicked/borrowed and got ripped out of my hands, which I read, but was probably too young to understand. It's a good book, very interesting but not for the faint of heart.