I shook my head. I shake my head quite a lot. “Boy!” I said. I also say “Boy!” quite a lot. Partly because I have a lousy vocabulary and partly because I act quite young for my age sometimes. I was sixteen then, and I’m seventeen now, and sometimes I act like I’m about thirteen. It’s really ironical, because I’m six foot two and a half and I have gray hair. I really do. The one side of my head – the right side – is full of millions of gray hairs. I’ve had them ever since I was a kid. And yet I still act sometimes like I was only about twelve. Everybody says that, especially my father. It’s partly true, too, but it isn’t all true. People always think something’s all true. I don’t give a damn, except that I get bored sometimes when people tell me to act my age. Sometimes I act a lot older than I am – I really do – but people never notice it. People never notice anything.
– J. D. Salinger