So we should be inquisitive, intelligent enough. We are serving. Everyone, we are serving, at least we are serving our senses. Everyone, practically, they are not serving any boss or any master, they are serving their senses. Suppose if I am serving somebody as my boss, actually I am not serving his money . . . serving his person; I am serving his money.
If he says: "Tomorrow you have to work free. You are getting twenty dollars a day now. Tomorrow I have no money. You will have to work free," "Ah, no, no, sir. I'm not coming. Because I am not serving you, I am serving your money." So actually we are serving money. Any why you are serving money? Because with the money we can satisfy our senses. Without money, we cannot satisfy our these informidable senses. If I want to drink, if I want to enjoy such and such things, then I require money. Therefore ultimately I am serving my senses.
Therefore Kṛṣṇa is called Govinda. We ultimately want our sense satisfaction, and go means senses. Here is the person, Supreme Personality of Godhead. If you serve Kṛṣṇa, then your senses become satisfied. Therefore His name is Govinda. Actually, we want to serve our senses, but the real senses, the transcendental senses, is Kṛṣṇa, Govinda. Therefore bhakti, devotional service, means purifying the senses, to be employed in the service of the supreme pure. The Lord is supreme pure. In the Bhagavad-gītā, in the Tenth Chapter, you'll find that Kṛṣṇa is described by Arjuna pavitraṁ paramaṁ bhavān (BG 10.12): "You are the supreme pure."
So if we want to serve the senses of the supreme pure, then we have to become pure also. Because without . . . being pure means spiritual. Spiritual life means pure life, and material life means contaminated life. Just like we have got this body, material body. This is impure body.