The inevitable campaign for 'gender balance' in Silicon Valley will also be indifferent to the fact that females are fast surpassing males in other sectors of the U.S. economy.

A second parent in the home provides back-up support in discipline when the other is at the breaking point, and a doubling of the emotional, intellectual, and moral resources that a child can draw on.

But a married spouse at whatever income level is almost always going to improve the economy of a household over a lifetime, whether that spouse is adding the proceeds of a minimum-wage job or the inestimable value of being a stay-at-home parent while the other one works.

Heather Mac Donald Quotes