The Kâma Sûtra, âmasûtra, is an ancient Indian Hindu text widely considered to be the standard work on human sexual behaviour in Sanskrit literature written by Vâtsyâyana. A portion of the work consists of practical advice on sexual intercourse. It is largely in prose, with many inserted anushtubha poetry verses. "Kāma" which is one of the three goals of Hindu life, means sensual or sexual pleasure, and "sûtra" literally means a thread or line that holds things together, and more metaphorically refers to an aphorism, or a collection of such aphorisms in the form of a manual. Contrary to popular perception, especially in the western world; Kâmasûtra is not an exclusive sex manual, it presents itself as a guide to a virtuous and gracious living that discusses the nature of love, family life and other aspects pertaining to pleasure oriented faculties of human life. The Kâmasûtra is the oldest and most notable of a group of texts known generically as Kâma Shâstra. Traditionally, the first transmission of Kâma Shâstra or "Discipline of Kâma" is attributed to Nandi the sacred bull, Shiva's doorkeeper, who was moved to sacred utterance by overhearing the lovemaking of the god and his wife Parvati and later recorded his utterances for the benefit of mankind.