Dr. Constantino Tsallis is an emeritus researcher at the Centro Brasileiro de Pesquisas Fisicas, founder of the National Institute of Science and Technology for Complex Systems, and external professor at the Santa Fe Institute, USA, and the Complexity Science Hub Vienna, Austria. He holds a Doctorat d’État ès Sciences Physiques from the University of Paris-Orsay. He is a doctor honoris causa at various universities in Latin America and Europe, a member of the Brazilian Academy of Sciences, Mexico Prize laureate, and holds the Aristion (Excellence) from the Academy of Athens. He has worked on a variety of theoretical subjects in the areas of critical phenomena, chaos and nonlinear dynamics, economics, cognitive psychology, immunology and population evolution, among others. For four decades, he has been focused on the entropy and the foundations of statistical mechanics, as well as on some of their scientific and technological applications. He has supervised over forty PhD and master theses, and delivered over one thousand invited lectures around the world. In the 2023 study at Stanford University, USA, he was ranked as the 'worldwide most influential scientist of Brazil in all sciences'.