Terrible book stumping for the oldest stereotypes on the basis of anatomy: 

"Because of this highly external [genitals] a man's family remains in large measure
psychologically external to him."  The oldest explanation in the book to relieve men of the burden of parenting, being a full partner in housework, and supporting the woman's life outside the family. 

"Always he senses a duty to act in the world at large, to make full and proper use of his powers in whatever field of activity he lives and operates." Translation: Leave the childrearing and the housekeeping to the little woman. See above. 

"At the highest level, then, a woman's bodily unsuitability for combat symbolizes her basic drive for commitment, a desire and a need for love and, in a certain
way, for guidance by the man she loves and trusts." There are no words. 

Cue the laugh button, Mr. Bradley. It's 2016.