Progress, maintains Edward de Bono--whether on a personal or global scale--depends on thinking and behavior that are positive and constructive. The world today is undergoing dramatic, often violent changes, and human behavior is frequently shaped by guilt and negativity. To lift this dark cloud and create positive revolution, we need to rely more on humor, a key element in changing perception. In this inspiring book, Edward de Bono demonstrates clearly and simply how we can learn to think and interact constructively, efficiently, and with respect for core human values.