Ladies: How could you tell if a man is intellectual or not?

I'm asking this because I'm not the smartest man in the world. I attract a lot of girls physically, but I'm a little slow to be honest. Most people are smart and intellectual are arrogant, manipulative and concieted. I'm not ever going to be perfect, but is it possible that I can fall in love with a nice, attracted girl. even though I may be a little "slow"? Or do most girls want their men to be intellectual brainiacs who are articulate and know everything under the sun?