For people who are desperate and searching, sexuality on the Internet offers an incredible release.

I will always be referred to as a theorist, but I was only a fellow traveller with a degree.

There are many options in a marriage. If the couple has been together for a certain amount of time and has a certain amount of liberalism or life experience, it could be the kind of relationship in which one partner ventures into the occasional affair, which is then forgiven. This only happens every 13 years on average, but it obviously does occur.

Perhaps the couple got married at 25 and now they're 45 and this is an option. And if a couple is still together, or perhaps finds its way back together, I like to say that it's forever. They belong together, it's a good fit, it's the right pairing. It almost gives me goose bumps.

It's very important to approach pedophiles and pedosexuals and offer them therapy. It's been my experience that you can reach your objective with what I would call kind-hearted, informed and enlightened patients - in the sense that they don't lose their desire, but that they no longer have physical contact with children. That would be the goal.

The social problem is that we haven't come up with any alternative models. Our culture hasn't developed an ars erotica. Think, for example, of conditions in India or in Japanese culture and of how the erotic has been cultivated there. They're not as clinical and rabbit-like as we are.

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.