The past week has underscored one more way in which the lives of the super-rich are diverging from the lives of everyone else: The middle class is becoming a matriarchy, while the plutocracy remains firmly patriarchal.

The sexist mores of the super-rich were exposed by one of that tribe’s most prominent philanthropists, the hedge fund billionaire Paul Tudor Jones. At an April symposium at the University of Virginia, Jones said that women didn’t trade as successfully as men because becoming a mother is a “killer” to professional focus. “You will never see as many great women investors or traders as men – period, end of story,” he said.

“As soon as that baby’s lips touched that girl’s bosom, forget it,” Jones said, describing the grim career impact of motherhood on two women who had worked with him in the late 1970s.

“Every single investment idea,” he said, “every desire to understand what is going to make this go up or go down is going to be overwhelmed by the most beautiful experience which a man will never share about a mode of connection between that mother and that baby.”

When they were revealed by the Washington Post last Thursday, Jones’s remarks swiftly became notorious, partly because of the vivid language he used to make his case. And Jones duly apologized.