Self-knowledge is at the heart of this study of man. The foundations of our being prompt us to reflect on who we are and what our legitimate aspirations are. The world within and around us is the key to understanding some of the mysteries that preoccupy us on a daily basis. The author allows us to take an original look at ourselves. He offers us a glimpse into the inner workings of our behavior in creation and procreation. In this way, we can unravel certain existential enigmas for ourselves: life, death, infinity, love in all its guises and the other passions that run through us and change our destinies. This book analyzes the human being in all its complexity, strength, fragility, limits and universality.