it sounds like this really is the issue for you. i also think you need to be careful about not trying to project this onto women by saying it's hard to find an intelligent woman sexy at the same time. this is your issue and not anything biological. honestly, it is garden variety sexism. rather than avoiding smart but sexy women why not continue a conversation with them and learn to see them as real, multi-faceted people? the only way to get over a fear is to face it. i'm sure you'll regain your intelligence after spending a bit of time with them. it is good to remember that women are people and not objects for your gratification.