Returning to Our Natural Consciousness
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Therefore, taking care of the body only is called  dharmasya glāniḥ , or pollution of one's duty.
One must know the necessities of the body and also the necessities of the soul. The real necessity in life is to supply the comforts of the soul, and the soul cannot be comforted by material adjustments. Because the soul is a different identity, the soul must be given spiritual food, and that spiritual food is  Kṛṣṇa  consciousness. When one is diseased, he must be given the proper diet and the proper medicine. Both are required. If he is simply given medicine but not a proper diet, the treatment will not be very successful. Therefore the  Kṛṣṇa  consciousness movement is meant to give both the proper medicine and the proper diet for the soul. The diet is  kṛṣṇa-prasāda , food that has first been offered to  Kṛṣṇa , and the medicine is the Hare  Kṛṣṇa mantra .
nivṛtta-tarṣair upagīyamānād bhavauṣadhāc chrotra-mano-'bhirāmāt ka uttamaśloka-guṇānuvādāt pumān virajyeta vinā paśu-ghnāt (Bhāg. 10.1.4)
Parīkṣit Mahārāja said to the great sage Śukadeva Gosvāmī, “The discourses on  Śrīmad-Bhāgavatam  that you are giving me are not ordinary. These  Bhāgavata  discourses are relishable for persons who are  nivṛtta-trṣṇa , free from hankering.” Everyone in this material world is hankering for enjoyment, but one who is free from this hankering can taste how relishable the  Bhāgavatam  is. The word  bhāgavata  refers to anything in relationship to Bhagavān, the Supreme Lord, and the Hare  Kṛṣṇa mantra  is also  bhāgavata . Thus Parīkṣit Mahārāja said that the taste of the  Bhāgavata  can be relished by one who is free from hankering to satisfy material desires. And why should this  Bhāgavata  be tasted?  Bhavauṣadhi : it is the medicine for our disease of birth and death.
At the present moment, we are in a diseased condition. Materialists do not know what is disease and what is health. They do not know anything, but still they are posing as great scientists and philosophers. They do not inquire, “I do not want to die. Why is death enforced upon me?” Nor do they have any solution to this problem. But still they call themselves scientists. What kind of scientists are they? Advancement in science should bring about knowledge by which misery can be minimized. Otherwise, what is the meaning of science? Scientists may promise that they can help us in the future, but we may ask them, “What are you giving us