Bhāmatī--Swami_Vivekananda

Vachaspati Mishra (IAST: Vācaspati Miśra), was a ninth or tenth century Indian Hindu philosopher of the Advaita Vedanta tradition, who wrote bhashya (commentaries) on key texts of almost every 9th-century school of Hindu philosophy. He also wrote an independent treatise on grammar, Tattvabindu, or Drop of Truth, which focuses on Mīmāṃsā theories of sentence meaning.