One [paradox] is that pornography follows in that wake of women's liberation. The first instances of hard-core pornography were in late 18th-century in France, "the Golden Age of Women." The next wave in the 20th century comes from Sweden, one of the first countries where women voted. Then Germany, again, at the forefront of progress. Then America in the '80s, when women were closing the pay gap. And Japan, same thing.

Whenever I read a book about a marriage, I always feel I'm being lied to.

The division [between how much housework men and women do] is declining across all advanced economies - not for the reasons that people want, which is men are doing more, but because women are doing less of it, but even then, the trend is getting towards equality.

When you look at the biggest study of the American dream, the number-one correlate for upward mobility is having two parents in a home. It doesn't matter if they're male or female.

We have never been more detached from one another, or lonelier. In a world consumed by ever more novel modes of socializing, we have less and less actual society. We live in an accelerating contradiction: The more connected we become, the lonelier we are.

The research points pretty clearly to the rise of companionate marriage, and I just think it's going to keep being popular, for the very simple reason that it's basically the only way to afford a family life in the 21st-century in advanced economies. It's one of the major reasons for the spike in income inequality. Surgeons used to marry their secretaries. Now they marry other surgeons.

You cannot have an advanced economy while holding women back from the workplace.