Man, the period of whose life is one hundred years, should practice Dharma, Artha, and Kama at different times and in such a manner that they may harmonize, and not clash in any way. He should acquire learning in his childhood; in his youth and middle age he should attend to Artha and Kama, and in his old age he should perform Dharma, and thus seek to gain Moksha, that is, release from further transmigration.

In: p. 13 - Kama Sutra