Every living entity has got this pravṛtti, means propensity. What is that? Sense enjoyment. Loke vyavāyāmiṣa-madya-sevā nityā hi jantor (SB 11.5.11). Jantuḥ means living being. Nitya, always, he has got the propensity, vyavāyāmiṣa-madya-sevā. Vyavāya. Vyavāya means sex life and āmiṣa means meat-eating. Vyavāya āmiṣa, madya-sevā, and intoxication. These are natural instincts of all living entities. Even amongst the ants these propensities are there. Those who have studied . . . the ants are very much fond of being intoxicated. Therefore they find out sweet, sugar. Sweet is intoxication. Perhaps you know, all. The liquor is made from sugar. Sugar is fermented with acid, sulphuric acid, and then it is distilled. That is liquor. Therefore too much sweet-eating is prohibited.
So loke vyavāya āmiṣa mada-sevā nityas tu jantuḥ. This is propensity. Material life means every living entity has got these propensities. But they have to be restricted. Pravṛttiḥ eṣaṁ bhūtānām. That is natural instinct. But if you can stop them, that is your excellence. That is called tapasya. Tapasya means I have got naturally some propensities, but that is not good. Not good in this sense: if we continue that propensity, then we have to accept this material body. This is the law of nature. There is a verse, pramattaḥ . . . what is called, that? Now I'm forgetting that. That everyone is mad, mad after sense gratification. Na sādhu manye yata ātmano 'yam asann api kleśada āsa dehaḥ (SB 5.5.4). So long we'll continue this propensity of sense enjoyment, you'll have to accept body. That is birth and death. So long.
Therefore, the process should be how to make zero all these propensities. That is perfection. Not to enhance it. Nūnaṁ pramattaḥ kurute vikarma yad indriya-prītaya āpṛṇoti. Nūnam, "alas," "indeed"; pramattaḥ, these madmen. They are mad, those who are after these propensities, vyavāya āmiṣa mada-sevā, sex, intoxication and meat-eating. They're all madmen. Pramattaḥ. Nūnaṁ pramattaḥ kurute vikarma (SB 5.5.4). Vikarma means activities which are prohibited. We see, for these three things, āmiṣa-mada-sevayā, for sex life, for meat-eating, for drinking, people are working. Not only working; dishonestly working. How to get money, how to get money, the black market, white market, this, that, only for these three things: āmiṣa-mada-sevā, meat-eating, intoxication.
(break) Why? Āmiṣa-mada-sevayā. Simply for this sex, meat-eating and drinking. Āmiṣa-mada-sevayā. In the Vedic literature, they have studied analytically—not now—since very, very long time. You see? This is natural inclination. The creation is not new. There were many, many creations.
So all the records are there. So it is not new thing. Therefore, nūnaṁ pramattaḥ kurute vikarma yad indriya-prītaya āpṛṇoti (SB 5.5.4). This is the instruction of Ṛṣabhadeva to His sons. "My dear sons, don't be misled. These rascal fools, they have become mad after these things—meat-eating and intoxication and sex life." Na sādhu manye, "It is not good at all." Na sādhu manye. "I don't allow. I don't say it is very good. It is not at all good." Na sādhu manye. "Why it is not good? We are enjoying life." Yes, you are enjoying now, but yata ātmano 'yam asann api kleśada āsa dehaḥ (SB 5.5.4). So long you will continue with these things, you'll have to accept body, and when you accept body, there must be birth, there must be death, there must be disease and there must be, what is called, old age. You'll suffer. You'll suffer.
But your actual position is na jāyate. You do not take birth, but you have conditioned yourself to take birth. Actually, your position is no birth; eternal life. As Kṛṣṇa is eternal, similarly, every one of us, we are eternal because we are part and parcel of Kṛṣṇa—the same quality. As Kṛṣṇa is sac-cid-ānanda-vigrahaḥ (Bs. 5.1), He is form, transcendental form, eternal form, full of knowledge, full of bliss, similarly we are also, although particle, the same quality. Therefore it is said, na jāyate. This problem, this rascal civilization they cannot understand, that I am eternal; I am put into this condition of birth and death. No rascal understands, so-called philosophers, scientists, all of them; therefore rascals, fools. Reject them. Reject them immediately. They are working hard, the same: nūnaṁ pramattaḥ kurute vikarma (SB 5.5.4), just like madman works. What is the value of madman's work? If he's busy whole day and night, "I am very busy," "So what you are, sir? You are a madman. Your brain is cracked, crazy. So what is the value of your work?" But this is going on.
So Kṛṣṇa consciousness, you just imagine how important movement it is. It is the best welfare activities for the human society. They are all fools and rascals, and they have no knowledge, ignorant of their constitutional position, and they are unnecessarily working hard day and night. Therefore they have been said mūḍha. Mūḍha means ass. The ass works day and night for the washerman for little grass. Grass is available everywhere, but he, still, he thinks that "If I do not work for the washerman very hard, I'll not get this grass." This is called ass. Therefore, when one becomes intelligent after cultivating knowledge . . . one becomes intelligent by and by. First of all brahmacārī. Then, if one cannot remain a brahmacārī, all right, take a wife, gṛhastha. Then give up, vānaprastha. Then take sannyāsa. This is the process. The mūḍha, they'll work day and night for sense gratification. Therefore, at a certain period of life, that stupidity should be given up and taken sannyāsa. "No. Finished." That is sannyāsa. "Now this portion of life should be completely for Kṛṣṇa's service." That is real sannyāsa.