Delve into the intricate relationship between holography and quantum gravity in this advanced lecture, the third in a series. Explore cutting-edge concepts and theories that bridge the gap between these two fundamental areas of physics. Gain insights into the latest developments in the field as presented by Roberto Emparan, a renowned expert in theoretical physics. Over the course of 1 hour and 39 minutes, engage with complex ideas and mathematical frameworks that shed light on the nature of spacetime and the quantum realm. Suitable for graduate students and researchers in physics, this lecture offers a deep dive into the forefront of theoretical physics research.