While school is usually associated with childhood and young adulthood, education doesn't end there. People self-teach in libraries and bookstores all the time. But sometimes an instructor is necessary, and so people go back to college or attend an adult education class. Such classes also exist in Second Life, including Professor Bergson's Philosophy Class. For nine years, Gemma Cleanslate has been attending, and a new semester is about to start. This year, the theme is "Looking for Spinoza." So who was Spinoza and why does the Professor consider him important?