Explore the foundations of non-perturbative quantum field theory in this comprehensive lecture by Di Pietro Lorenzo. Delve into the motivation behind studying these methods, examine illustrative examples, and understand the course structure. Investigate the intricacies of theory in dimensions less than 4, grasping its significance and general principles. Analyze single trace operators, evaluate key claims, and uncover the concept of large factorization. Gain valuable insights into advanced quantum field theory concepts and techniques throughout this 1-hour 31-minute presentation from the Galileo Galilei Institute.