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.

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

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

Fantasies have to remain dirty. Cleanliness, scrupulousness and rationality are poison for eroticism.

Good sex can be anything, including dirty.

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

There will be other forms in addition to our classic marriage. One is already looming on the horizon: polyamory, or having more than one intimate partner.