If he knows what's good for him, the modern gentleman will prefer brains, not blondes, according to a study of marriage.
In what may be interpreted as a victory for feminism and a sign that men now stand even less chance of winning an argument with their wives, researchers have discovered that marriages today have the best prospects of survival when partners have the same level of education.
The generation of husbands who married in the early 1990s, the researchers found, was also the first to be happy with wives who were as smart or smarter than them.
This, the study confirmed, was a reversal of the 1950s, when Marilyn Monroe starred in Gentlemen Prefer Blondes, and when a marriage was most likely to last when a husband was better educated than his wife (and could presumably flatter him by saying that he knew best).
After her team analysed the fortunes of thousands of American couples who had married from the 1950s to 2004, Professor Christine Schwartz, of the University of Wisconsin, said they had discovered "trends towards a more egalitarian model of marriage in which women's status is less threatening to men's gender identity".