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.

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

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

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

With an intelligent couple, it ought to be possible for the husband or wife to look for satisfaction outside the relationship - while always taking the partner into consideration, meaning acting openly but still discreetly.

When it comes to sexuality, people like to tell lies. It's only when it comes to money that they lie more.

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.