A person acquainted with the true principles of this science, who preserves his Dharma (virtue or religious merit), his Artha (worldly wealth) and his Kama (pleasure or sensual gratification), and who has regard to the customs of the people, is sure to obtain the mastery over his senses. In short, an intelligent and knowing person attending to Dharma and Artha and also to Kama, without becoming the slave of his passions, will obtain success in everything that he may do.
Indian logician, author of Kama Sutra
Vātsyāyana, also spelled Vatsayana, 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 prophet of the Asuras, to whom the origin of erotic science is attributed.
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A man practicing Dharma, Artha and Kama enjoys happiness both in this world and in the world to come. The good perform these actions in which there is no fear as to what is to result from them in the next world, and in which there is no danger to their welfare. Any action which conduces to the practice of Dharma, Artha and Kama together, or of any two, or even one of them should be performed. But an action which conduces to the practice of one of them at the expense of the remaining two should not be performed.