Pakṣilasvāmin Vātsyāyana

Pakṣilasvāmin Vātsyāyana was an Indian philosopher, commentator and logician of the Nyaya School. He authored the commentary "Nyāyabhāsya", the first full commentary on the Nyāya Sūtras of Gautama (c. 150 CE), which is itself the foundational text of the school of philosophy called "Nyāya".