The sexual revolution of the 1960s was mostly a movement of young people. I felt that the so-called "free relationships" were overrated.

While the Internet generally tends to have a stress-relieving function for adults - as long as they aren't inclined toward sex addiction - I don't see this being the case for adolescents.

Some 95 percent of all sexual contact still occurs in permanent relationships. That's an impressive number.

Aura of the mysterious is a minor perversion that a couple shares. A fetish that one of the two partners finds arousing, or a particular sexual scenario. Fantasies have to remain dirty. Cleanliness, scrupulousness and rationality are poison for eroticism.

I have the utmost respect for people who are asexual. I didn't believe that they existed at first. But they do exist, and their numbers are growing.

I maintain that we are still a largely ignorant society when it comes to sex. We speak incorrectly and superficially about sexuality. And when you talk about it too much, you run the risk of destroying its mystery.

You're married to a woman who has no objection to another woman joining the couple. Then she brings in her boyfriend. Suddenly you realize - my God! - you can love more than one person. In fact, you can love several people at the same time.