 Gaṅgeśa lived in the first half of the fourteenth century, in Mithilā, in northeastern India, where he was a prominent teacher, both of Nyāya, including logic and critical reasoning, and of Mīmāṃsā, the school known for Vedic interpretation and ritual. Gaṅgeśa endorses Nyāya in his Jewel, but he was also a great master of Mīmāṃsā. Mīmāṃsā is a long-running tradition which, like Nyāya, pronounces on almost every topic imaginable, along with Vedic ritual, the school’s specialization, as Nyāya’s is critical reasoning. Gaṅgeśa knew well Mīmāṃsaka positions in both of its major branches, the Bhāṭṭa (after Kumārila Bhaṭṭa of the seventh century), and the Prābhākara (after Kumārila’s renegade student, Prabhākara). And Gaṅgeśa may be supposed to have learned the standard curricula in the grammarian literature, the epic poems, etc., some of which he cites, for example, Pāṇini (c. 500 BCE), and, in several places, the Bhagavad Gītā.