カーマ・スートラ
Vatsyayana's book the "Kama Sutra", in parts of the world, is presumed or depicted as a synonym for creative sexual positions; in reality, only 20% of "Kama Sutra" is about sexual positions. The majority of the book, notes Jacob Levy, is about the philosophy and theory of love, what triggers desire, what sustains it, how and when it is good or bad. "Kama Sutra" presents kama as an essential and joyful aspect of human existence.