This question came up on a 2 year questionnaire that I'm currently filling out for daycare (sidenote: um, what?? When did 2 years (almost) happen?)

My answer:

His love of letters and numbers (which pleases both his bookworm/grammar nerd mother and math-geek father) and his strong will. It's difficult to get him to do something he doesn't want to do, and thought it can be frustrating now, I think it'll be a great asset as he grows...he won't be easy to push around