This kama, or desire, cannot be annihilated. There are some philosophers who say that if one gives up his desires, he again becomes liberated. But it is not at all possible to give up desire, for desire is a symptom of the living entity. If there were no desire, then the living entity would be a dead stone. Srila Narottama dasa Thakura, therefore, advises that one turn his desire towards serving the Supreme Personality of Godhead. Then desire becomes purified. And when ones desires are purified, one becomes liberated from all material contamination. The conclusion is that the different philosophers theories to explain the varieties of life and their pleasure and pain are all imperfect. The real explanation is that we are eternal servants of God and that as soon as we forget this relationship we are thrown into the material world, where we create our different activities and suffer or enjoy the result. We are drawn into this material world by desire, but the same desire must be purified and employed in the devotional service of the Lord. Then our disease of wandering in the universe under different forms and conditions will end.