Guest (1): What do you consider illicit sex?

Prabhupāda: Illicit sex means animal life. The marriage is in the human society, not in the dog society. So if one has illicit sex, that means he is no better than dog.

Guest (2): I don't quite understand that. Did you say that illicit means sex between people who are not married?

Prabhupāda: Yes. Sex is allowed only married couple. And that is also only for begetting child.

Guest (1): Married under what law? Under what religion? Under what religious law?

Prabhupāda: There is in Bhagavad-gītā, that dharmāviruddhaḥ kāmo 'smi. Find out. You can come here and read.

(Room conversation-------Perth).

Regarding your question: "What is the correct sexual etiquette for a strict Grhastha; and what is spiritual family planning?" Unless one wants to beget a child, there should not be any sex life. The best thing is to forget sex, but it is not possible immediately or all of a sudden, especially in the Western countries where sex life is so liberal. So under the circumstances, one should try to have sex life only for children, not for any other purpose. Spiritual family planning is that one should be determined to train up children in Krishna Consciousness. According to Bhagavata, the spiritual family planning is that one should not become a father or one should not become a mother, unless he is able to maintain their children to the extent of liberation. It is the duty of the parents to see that the children are growing luxuriantly not only materially, but spiritually also. So spiritual training should be given from the very beginning. Kaumaram acaret prajna—In the Srimad-Bhagavatam, Prahlada Maharaja has instructed that spiritual consciousness or Krishna Consciousness should be taught to the children from the very beginning as they are given education from early childhood.

(Letter to Dayananda--------Montreal).

Prabhupāda: I have seen this Freud philosophy became so prominent that sometimes in the year... 1940's maybe. So one young woman was traveling, and another young man was traveling. So they began to discuss about sex very openly. And both of them unknown. Still, they engaged themselves in discussing the sex literature, without any shame.

Hari-śauri: Pseudo-intellectuals. Shameless.

Prabhupāda: Yes. Young boy, young girl, they began to discuss on sex openly as scientific.

Hari-śauri: What is this scientific?

Prabhupāda: Scientific means after discussing for some time you propose that "Let us enjoy sex." That's all. It is common thing in your country, unknown girl, unknown boy, and talk for some time, "Let us go to some restaurant," and then talk more intimately, and then sex.

Hari-śauri: That's the whole social system.

(Room conversation------Vrindavana).