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.

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.

Sexual desire declines after four to seven years. That's been proven.

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

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

Sexuality is pushed back more and more and people try to replace what they've lost with other forms of excitement.

Just go to an auto show, and you'll see all the signs of sexual arousal in the men: shiny eyes, tremors, sex flush. An acute example of the need for professional sex research.