Ocean of Reasoning: A Great Commentary on N=ag=arjuna's Mūlamadhyamakak=arik=aTsong khapa (14th 15th centuries) is arguably the most important and influential philosopher in Tibetan history. His Ocean of Reasoning is the most extensive and perhaps the deepest extant commentary on N=ag=arjuna's Mlamadhyamakak=arik=a (Fundamental Wisdom of the Middle Way), and it can be argued that it is impossible to discuss N=ag=arjuna's work in an informed way without consulting it. It discusses alternative readings of the text and prior