Once upon a time, two young men set out on life's journey. The both had the same goal: to become happy and wise. Their names were Carl and Neil.
They both enrolled in a legendary university. Both of them read every book known to man. Both of them paid careful attention in classes and they both heard every word the professors said. Carl would furiously take notes. Neil would sit quietly with fingers locked behind his head and listen, sometimes with a smile and sometimes with a grimace. From time to time Neil would speak in class, often challenging his teachers' opinions. All the while, Carl kept meticulous notes. When the class would laugh, Carl would look up, confused, and Neil would explain the joke.