So you think you know just what goes on inside your head, my friend    There is so much more than you and I can comprehend    Things that make you laugh, things that make you cry    Let you love when you feel like you wanna die       There's no answer to the questions that we find inside, my friend    But when we start to wonder why, we wind up further behind, my friend    All we see has always been shown    But there's so many things that I've never known       So you think you know, my friend    But you don't know, my friend, my friend    You think you know    But you don't know       All for one and one for all    It's everything or nothing at all    Listen, my friend    You don't know    No, my friend    You don't know