Women observe subconsciously a thousand little details, without knowing they are doing so. Their subconscious mind adds these little things together - and they call the result intuition.
When a woman starts talking about her duty, her regard for appearances, and her respect for religion, she raises so many bulwarks which she delights to see captured by storm.
... the woman who grows up with the idea that she is simply to be an amiable animal, to be caressed and coaxed, is invariably a bitterly disappointed woman. A game of chess will cure such a conceit forever. The woman that knows the most, thinks the most, feels the most, is the most. Intellectual affection is the only lasting love. Love that has a game of chess in it can checkmate any man and solve the problem of life.
Variability is one of the virtues of a woman. It avoids the crude requirement of polygamy. So long as you have one good wife you are sure to have a spiritual harem".