Vatsyayana's Commentary on the Nyaya-sutra is one of classical India's most important philosophical works. This Guide offers both a map and interpretation of this challenging canonical text, suitable for any student or novice reader. Treating them as a single hybrid text, the Nyaya-sutra with Vatsyayana's commentary systematizes in skeletal form centuries of ancient Indian philosophical developments concerning logic, epistemology, and dialectics, while also defending a realist categorial metaphysics. It offers a number of epistemological and methodological insights that inform intellectual...