Claude Allegre offers here a vast panorama of science, not science, presenting the major scientific disciplines, but also the great researchers who have marked the history of science and the key concepts of science since antiquity up 'to the present. His reflections on science are very instructive, especially for the neophyte. I doubt that academic scientists are learning something, but the general public can only be filled by this simple but detailed work, which brews and a lot of knowledge through various fields of knowledge.