One should be social, but the circle of his/her true friends should consist of trusted individuals with whom mutual development and learning can occur. If you find yourself in a situation where you're more knowledgeable, there might be a risk of the other person feeling jealous. If both individuals possess knowledge in different subjects they both enjoy, a continuous exchange of learning can take place, providing an ongoing topic of conversation. I've encountered people eager to learn new things, as well as those lacking knowledge who may exhibit jealousy and rudeness when others surpass them. The crucial point here is that everyone possesses unique knowledge and interests where they may excel over others. It all falls down to an individual's character and background.