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.

Most pornographic images are simply too repulsive.

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.

There are young men who want thrills but no longer value sex, so they do completely different things, including aggressive things.

Good sex can be anything, including dirty.

The sexual revolution produced cultural convulsions that were unparalleled in the 20th century.

I'm reminded of a female patient who was particularly aroused by the shape of her husband's shoulder. And this hint of perversion should ideally remain a secret for both partners.