The "Kama Sutra" is an ancient Indian Hindu text widely considered to be the standard work on human sexual behaviour in Sanskrit literature written by Vãtsyãyana. A portion of the work consists of practical advice on sexual intercourse. It is largely in prose, with many inserted poetry verses. (Excerpt from Wikipedia)
Vātsyāyana is the name of an ancient Indian philosopher, known for writing the Kama Sutra, the most well-known book in the world on human sexuality. He lived in India during the second or third century CE, probably in Pataliputra (modern day Patna). (Wikipedia)