Kama Sutra by Vātsyāyana
This ancient Indian text is a guide to virtuous and gracious living that discusses the nature of love, family life, and other aspects pertaining to pleasure-oriented faculties of human life. It is a comprehensive manual on the art of love and sexual behavior, providing detailed advice on courtship, marriage, and the act of lovemaking. The text, while often associated solely with sexual positions, covers a wide range of topics including the duties and privileges of a wife, advice for courtesans, and methods to attract others.