I think that most people would want to become even smarter. That means we must achieve that by increasing our level of knowledge. Real knowledge isn't something we can obtain by memorization, because what we can memorize doesn't have much to do with actual people of things, thus it is very difficult to procure the true knowledge of those things. I think real knowledge comes from our undying interests. Only with a strong interest in something, will we gain more knowledge. This doesn't require spending time to memorize anything and we can easily retain it in our heart.