Kṛṣṇa's name is Hṛṣīkeśa. He is the master. Master of the senses. You cannot enjoy your senses independently. Just like the servant. Servant cannot enjoy. Just like the cook cooking very, very nice foodstuffs in the kitchen, but he cannot eat in the beginning. That is not possible. Then he will be dismissed. The master first of all must take, and then they can enjoy all the nice foodstuffs.
So Kṛṣṇa is the master of the senses. The whole world is struggling for sense gratification. Here is the simple philosophy, truth, that "First of all let enjoy, let Kṛṣṇa enjoy. He is the master. Then we enjoy." Tena tyaktena bhuñjīthā. The Īśopaniṣad says everything belongs to Kṛṣṇa. Īśāvāsyam idaṁ sarvam: (ISO 1) "Everything belongs to Kṛṣṇa." This is the mistake. Everything belongs to Kṛṣṇa, but we are thinking, "Everything belongs to me." This is illusion. Ahaṁ mameti (SB 5.5.8). Ahaṁ mameti. Janasya moho 'yam ahaṁ mameti. This is illusion. Everyone is thinking, "I am this body, and everything, whatever we find in this world, that is to be enjoyed by me." This is the mistake of civilization. The knowledge is: "Everything belongs to God. I can take only whatever He gives me, kindly allows." Tena tyaktena bhuñjīthā. This is not Vaiṣṇava philosophy; this is the fact. Nobody is proprietor. Īśāvāsyam idaṁ sarvam. Every... Kṛṣṇa says, "I am enjoyer. I am the proprietor." Sarva-loka-maheśvaram (BG 5.29). Mahā-īśvaram. Mahā means great. We can claim īśvaram, controller, but Kṛṣṇa is described as mahā-īśvaram "controller of the controller." That is Kṛṣṇa. Nobody is independently controller.
So therefore Kṛṣṇa is described, Hṛṣīkeśa. Hṛṣīkeṇa hṛṣīkeśa-sevanaṁ bhaktir ucyate (CC Madhya 19.170). And bhakti means to serve Hṛṣīkeśa by the hṛṣīka. Hṛṣīka means senses. Kṛṣṇa is the master of the senses, and therefore, whatever senses I have got, the master is Kṛṣṇa, proprietor is Kṛṣṇa. So when our senses are engaged in the satisfaction of the master of the senses, that is called bhakti. This is the definition of bhakti, devotional service. And when the senses are engaged for sense gratification, not for the master, that is called kāma. Kāma and prema. Prema means to love Kṛṣṇa and do everything for satisfaction of Kṛṣṇa. That is prema, love. And kāma means everything done for the satisfaction of my senses. This is the difference. The sense is the medium. Either you do it, satisfy your senses, or you satisfy Kṛṣṇa's senses. But when you satisfy Kṛṣṇa's senses, you become perfect, and when you satisfy your senses, you become imperfect, illusioned. Because you cannot satisfy your senses. That is not possible without Kṛṣṇa. Hṛṣīkeṇa hṛṣīkeśa-sevanaṁ bhaktir ucyate (CC Madhya 19.170).