Professor Freitas-Magalhães' work represents a rare combination of scientific rigor, innovative vision and humanitarian commitment, characteristics that make him an invaluable reference and a lasting influence for future generations. With a visionary look and tireless dedication, he redefined the study of emotions and established an investigation model committed not only to scientific advancement, but to human development, can be read in this tribute book and in the commemoration of the 21st anniversary of the Facial Emotion Expression Lab.