Vātsyāyana is an ancient Indian philosopher, known for writing the Kama Sutra, the most ancient book in the world on human sexuality. He lived in India during the second or third century CE, probably in Pataliputra (modern day Patna). He is not to be confused with Pakṣilasvāmin Vātsyāyana, the author of Nyāya Sutra Bhāshya, the first preserved commentary on Gotama's Nyāya Sutras. His name is sometimes erroneously confused with Mallanaga, the seer of the Asuras, to whom the origin of erotic science is attributed.
