I don't know if I'm smart. In fact, I feel stupid most of the times.
I don't want people to be afraid of me.
Feeling stupid most of the time means that you realize that you know very little in relation to all the things that can be known...a sign that you are in fact not stupid. Take it from me, I deal with plenty of self-assured undergrads that don't know anything and aren't even aware that this is the case- a sure sign of actual stupidity.