In this fourth course of the ACI In-Depth Course Series, we will dive deeply into the study of emptiness and learn the art of interpreting what the Buddha really meant. This is one of the most beautiful subjects, and incidentally the most difficult, of the entire Geshe study program. This teaching was given by Geshe Thubten Rinchen, who Geshe Michael considers to be the greatest living scripture teacher in India. He agreed in 1998 to give a few lectures on it to Geshe Michael and 15 of his ACI students which turned out to be these 26 classes.