In the knowledge of the human being there is a fundamental question still unanswered: how do receptors, synapses and neurons generate feelings, thoughts and memories, that is, how does one go from the brain to the mind? Since the beginning of culture, man has been trying to explain the world, to survive, to create, to know himself and to understand others. The 19th century witnessed the consolidation of psychology, perhaps the most controversial, complex, divided and questioned discipline that has ever existed, but also one of the most suggestive, impressive and hopeful that modern science has ever formulated. It has been a long road full of illusions, discoveries and conflicts, a fascinating journey worth exploring. Neuroscientist José Ramón Alonso and psychologist Irene Alonso Esquisábel invite you on a mind-blowing journey through the human mind and time, starting from the dawn of life on Earth and its first cognitive experiences and reaching the most avant-garde and unusual research on consciousness and brain functions. In these lines you will discover the greatest challenges that our species has ever faced, the infinity of geniuses and absurdities to which it has given rise, the vast ocean of failed schools and paradigms that with greater or lesser success have shaken it, and the reality that awaits it on a horizon as uncertain as it is promising. Here is why we think so.