What is "sex"? What is "gender"? Which sex is considered “good” and which is “bad”?.. At all times, people not only had sex, but also thought about it, trying to find answers to these and many other questions. In the era of the Internet, people go online to discuss sex, perhaps no less often than they actually do it. A non-fiction book about what society, scientists and leading thinkers of the world thought and think about sexuality, and how this relates to the contexts in which their thought develops.