(Uncontrolled lust— the path of spiritual destruction as described in Bhagavad-gita 2.62-63)
Devotee: The question: how does our love for Kṛṣṇa somehow or other get transformed into lust?
Devotee(2): In contact with the material energy.
Prabhupāda: That is not very difficult. One has got his wife or husband, but he or she transfers the love towards somebody else, how does he look?
Devotee(2): Personal choice.
Prabhupāda: Yes. It is happening every moment. Natural love is between the husband and wife, but the wife goes somewhere and the husband goes somewhere else. Why? The basic principle is enjoyment. He or she thinks that "I shall be able to enjoy more in this way." So this misguided spirit puts him into trouble. Kṛṣṇa-bahirmukha hañā bhoga vāñchā kare. He does not know the aim of life, and therefore his energy is transferred to something else misleading.
The difficulty is when a person is missing the aim of life, his energy is diverted in different misleading ways. Just like for our bodily necessities of life we require to eat, we require to sleep, we require some sense pleasure or sex pleasure, and we require some defense. So that is arranged—you eat, you sleep, you have wife or husband, enjoy, and properly defend yourself—but the business is different. Business is different means living peacefully he has to realize God, his relationship with God. That is his real business. But because people are not educated to the real business, he thinks that these four principles of bodily necessities of life, eating, sleeping, sex and defense, that is my business. Therefore he's transferring from this eating to that eating, from this sleeping to that sleeping, from this sex to that sex, from this defense to that defense. Because he has no other idea. This is the difficulty. He's thinking that sex life from this person to that person will be nice. But that is not. Sex life by the dogs, by the hogs or by the man, the same pleasure. That I have repeatedly said, that any nice, tasteful eatable, either you keep it in the golden pot or in iron pot, the taste is the same. But he, rascal, does not know. He thinks that "If I put it in the golden pot it will be more tasteful." This is going on. The sex life is the same. He's thinking in the human form of sex in a very nice apartment, so many, so many, decorated, it will change the quality of the sex between dogs and dogs. No, that will not change. The same taste. But because he has no other engagement, better engagement, therefore he's trying to improve these things, the tendency for these things. That is his trouble. He's becoming entrapped. Sometimes he's enjoying as a man, sometimes he's enjoying as a hog, sometimes he's enjoying as a dog, as a demigod, but the enjoyment is the same. But that he does not know. He has to go beyond this, transcend this enjoyment. That information he has not. That is the difficulty.
So God gives us all facility. We wanted to enjoy in a particular situation, and God gives us facility of that situation and gives also instruction, "Now you wanted." Just like one is very much addicted to eat flesh or blood. So God gives him the chance to accept the body of a tiger, and he's given all facilities, the nails, the jaws, and gives instruction, "Now you can enjoy." So He'll give us all facilities, but if you want His instruction, that what will be good for me, then He says, sarva-dharmān parityajya mām ekam (BG 18.66): "You give up this business, simply surrender unto Me. I'll take protection." So if we are intelligent we shall take His final instruction and follow it and be happy. That's all.
(Srila Prabhupada Lecture, August 5, 1976, New Mayapur, France)