So we are also old. In the Bhagavad-gītā you find this verse, nityaḥ śāśvato 'yaṁ purāṇo na hanyate hanyamāne śarīre (BG 2.20). Do you remember, any one of you, this verse from the Bhagavad-gītā? Eh? But you don't read. So I am writing all these books simply for selling, not for reading. This is not good. And if somebody asks you, "You are so much eager to sell your books. Do you read your books?" Then what you will say? "No, sir, we don't read. We sell only. Our Guru Mahārāja writes, and we sell." That is not good business. You must read. Why I am writing so many books? Not a single moment waste. If you want to become successful in Kṛṣṇa consciousness, don't lose even a single moment. That should be the first determination. Avyartha-kālatvam (Cc. Madhya 23.18-19), Rūpa Gosvāmī says. Forget sleeping, eating, mating. This is all material necessities. If you increase these things, then you cannot make any progress in spiritual life.
Therefore we say, "No illicit sex, no intoxication." You are already intoxicated. Why you are increasing intoxication? This māyā means intoxication. Piśācī pāile yena mati-cchanna... Just like a person, when he's ghostly haunted, he calls his father by ill names, but he cannot recognize even his father. So all of us, we are already under the clutches of māyā. That is the position of intoxication. And again intoxication? So what will be our condition? Therefore it is prohibited. First of all, whatever intoxication you have already got, just try to cure it. Don't increase it. So everything... The physical necessities means we have already got it, but it is meant for decreasing, not increasing. Pravṛttir eṣā bhūtānāṁ nivṛttis tu mahā-phalā. We have got general tendency, loke vyavāyāmiṣa-madya-sevā. Everything is there in the śāstra. Nityā hi jantoḥ. Jantu means living entities. So, it is eternally existing, loke vyavāya, sex intercourse, āmiṣa, eating non-fruital things. Āmiṣa means "which is not fruits and vegetables." Meat, fish, eggs, they are called āmiṣa. And they are called nirāmiṣa. Nirāmiṣa means fruits, vegetables, milks, food grains, sugar. These are nirāmiṣa. And eggs, fish, meat and so many other things, they are called āmiṣa. So āmiṣa. Āmiṣa means these things. Sevā, eating. And vyavāya. Vyavāya means sex life. Loke vyavāyāmiṣa-madya, intoxication. It is not that Vedic civilization did not know how to eat meat and how to drink liquor. It is all known. But they are prohibited, "Don't eat." It is not that then they were unknown, now it is discovered by scientific advancement.