Too much excellence makes a misfortune.

I think you can understand it best by the reference to the very natural prejudice against over-educated women, a prejudice founded upon experience and existing in all countries, even in Japan.

Men are not attracted to a woman because she is excellent at mathematics, because she knows eight or nine different languages, because she has acquired all the conventions of high-pressure training.

Men do not care about that.

They want love and trust and kindliness and ability to make a home beautiful and happy.