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.
Today, most women are surrounded by ingenious gadgets. They don't grow the peas or raise the chicken that they serve for dinner; instead they hunt and gather in the grocery store. They go through catalogs or department stores to buy clothes instead of shearing sheep, carding wool, and weaving cloth for skirts and coats and blankets.
Natural beauty really entices men. They will tell you this time and time again, and studies consistently prove it.
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.
There's biology in everything, even when you're feeling spiritual.
Until recently, we regarded love as supernatural. We were willing to study the brain chemistry of fear and depression and anger but not love.
Why do we feel jealousy? Therapists often regard the demon as a scar of childhood trauma or a symptom of a psychological problem. And it's true that people who feel inadequate, insecure, or overly dependent tend to be more jealous than others.
Good-looking people are always looking for other good-looking people.
Real competition can drive up testosterone, which boosts libido.
Anthropologists have found evidence of romantic love in 170 societies. They've never found a society that did not have it.
Research shows that couples who have a lot of similarities, including intellectual compatibility, end up staying together.
A hundred years ago, if you had a child out of marriage, you'd be a social disgrace. Today women feel comfortable enough economically and culturally to bring up a child without a recognized commitment from a man.