someone who likes his solitude

When I was still at school I really liked my solitude, well who else if not (introvert), I was often alone, I didn't care about the environment around me which was often I often have problems even though it will make me uncomfortable about my existence, I often think calmly and comfortably about the situation around me,So I like to be considered stupid by my friends, even though I already know their bad and good qualities towards other people. Don't underestimate quiet people because people like that can see your dark times even if they only look at you with a cold gaze