What is freedom? Is there a free will? Is our action predetermined? And what is actually time? Fernando Savater awakens the desire for philosophizing. He shows: who begins to think about the questions of life, who philosophizes. The author introduces the world of great thinkers in an easy-to-understand manner, introduces the most important schools of philosophy and encourages people to travel their own thoughts. An ideal introduction for young people and those who are in the mood for questions of life and philosophy.