Our heart is filled up with all dirty things, adharma. And it is very difficult to purify the heart, but it is possible, tad api. Even the hard-hearted, stone-hearted, rajo-guṇa, tamo-guṇa, can be melted, can be reformed. How? Īśāṅghri-sevayā. Īśa. Īśa means the Supreme Lord, Kṛṣṇa. Āṅghri means His lotus feet. Sevayā. This is possible. In the Bhagavad-gītā also, Kṛṣṇa says the same thing. Māṁ hi pārtha vyapāśritya ye 'pi syuḥ pāpa-yonayaḥ (BG 9.32). Pāpa-yoni. Puṇya-yoni means according to the infection of the heart with different qualities of these material modes of nature. That is called pāpa-yoni. One whose heart is too much engrossed with tamo-guṇa, rajo-guṇa, they are lower grade, pāpa-yoni. And gradually one who is free from the tamo-guṇa, rajo-guṇa... Even sattva-guṇa. Of course, sattva-guṇa is taken—the platform of goodness. That is the only hope in this material world, that one has to come by endeavor to the sattva-guṇa platform. Then the heart disease, kāma... hṛd-roga-kāma(?). It is a heart disease. Kāma means lusty desires simply to enjoy senses. This is called kāma. Hṛd-roga-kāma āpṛṇoti.
So the Kṛṣṇa consciousness movement means to cure the heart disease full with lusty desires. This is Kṛṣṇa consciousness. And the perfection comes when anyābhilāṣitā-śūnyaṁ (Brs. 1.1.11)—no more any material desire. That is possible. Yaṁ labdhvā cāparaṁ lābhaṁ manyate nādhikaṁ tataḥ. If you get something, that something, "I don't want anything more." Svāmin kṛtārtho 'smi varaṁ na yāce (CC Madhya 22.42),