Sex. The difficulty of writing about sex, for women, is that sex is best when not thought about, not analysed. Women deliberately choose not to think about technical sex. They get irritable when men talk technically, it's out of self-preservation: they want to preserve the spontaneous emotion that is essential for their satisfaction.

Sex is essentially emotional for women. How many times has that been written? And yet there's always a point even with the most perceptive and intelligent man, when a woman looks at him across a gulf: he hasn't understood; she suddenly feels alone; hastens to forget the moment, because if she doesn't she would have to think. [...]