Girirāja: "I am the strength of the strong, devoid of passion and desire. I am sex life which is not contrary to religious principles."
Prabhupāda: There is good sex life and bad sex life. One who does not know what is good sex life, what is bad sex life, he's a rascal. Here you have to indulge in sex life which is not against the religious principles. But you must know what is religious and what is irreligious. If you do not know, you are rascal. There are two kinds of sex life. Otherwise, why Kṛṣṇa says, "Sex life which is not against the religious principles, that I am." So God is good. So sex life which is not against the religious principles, that is good sex life. Otherwise, it is bad.
Indian man: Where Kṛṣṇa comments...
Prabhupāda: First of all let us understand this, that Kṛṣṇa says "Sex life which is not against the religious principles, that is I am." The sex life which is against the religious principles, that is bad.
Indian man: Can you explain to me what is good sex life and bad sex life.
Prabhupāda: Good sex life, when sex life is accepted for begetting good children. Just like in another place it is said pitā na sa syāj jananī na sā syāt. One should not become a father, one should not become mother, unless he or she can save his child from death. This is religious sex life. Suppose you are married. There is sex life. And both you and your wife decide that "Unless I am expert to save my child from death, we shall not have sex life." This is good sex life.
Indian man: It is negation of sex.
Prabhupāda: Yes. Otherwise sex life is there in the cats and dogs. If you are going to be a dog? You must act as a human being. This is to act as human being, that "I shall not become a father, my dear wife, you should not become a mother, if both of us are not expert how to save the death of our child." This is good sex life. If you are not expert to execute this scientific method, that is bad sex life. It is the dog's sex life.
Indian man: Has anybody practiced this type of sex?
Prabhupāda: Yes, there are so many. That is the Vedic civilization.