The discussion centers on identifying the highest authority in mathematical physics, with participants suggesting both historical figures and contemporary scientists. Edward Witten is humorously referred to as the "President of Physics," while Isaac Newton is acknowledged for his foundational contributions, although some argue that Faraday deserves credit for the field concept. The conversation highlights the subjective nature of authority in the field, emphasizing that learning mathematical physics relies more on practice than on singular authoritative figures. Recommendations for influential books are also sought, reflecting the broad and varied perspectives on the topic. Ultimately, the notion of authority in mathematical physics is deemed inappropriate, as the discipline is best understood through engagement and practice.