Women's worst invention was the plow. With the beginning of plow agriculture, men's roles became extremely powerful. Women lost their ancient jobs as collectors.

The Great Depression of the 1930s saw more American unmarried women working from nine to five, mostly in repetitive, boring, subordinate, dead-end jobs. But the number of working women doubled between 1870 and 1940. During World War II it doubled once again.

Despite the myth that men are less committed, they are predisposed to desire marriage.

As social animals, we need to exchange juicy tales about someone - to connect with one another. For millions of years our forebears must have sat around the campfire, whispering about everyone they knew.

As a group, anthropologists are not too fond of people who work in the business world.

We're apt to fall in love with those who are mysterious and challenging to us.

Romantic love is an obsession. It possesses you. You lose your sense of self. You can’t stop thinking about another human being.