Brad DeLong : Ïntelligence and Being Smart

If you use your intelligence to rationalize being incurious because you already know everything, or use your intelligence to find more sophisticated and convoluted reasons why what you decided was true before you began thinking is still true, you are not being very smart. Smart and stupid are not innate characteristics, but rather products of a willingness to educate oneself, to ask for and seek help from those smarter than oneself, and to mark one’s beliefs to market.