Marc-André Selosse takes a step toward the humanities to try to think about the upheavals and changes of the 21st century through the eyes of a naturalist. Each chapter is dedicated to a preconceived idea that has prevented us from seeing nature (including human nature) as it really is, oversimplifications that have widely circulated during the modern era and are partially responsible for the directional errors that have led to the crises we are experiencing today.