Hair that gleams can send a clear sign that you're young and in your prime, whatever your actual age.

A world without love is a deadly place.

It certainly would have been adaptive for ancestral man to have a chubby wife during stressful times of famine. Not only would she have had more calories to burn, and thus more energy and endurance, but since fat stores estrogen, she would have remained fertile for longer.

A woman of 40 or 50 or 60 can take estrogen replacements, get facelifts, spend her money in bars.

Anthropologists have found evidence of romantic love in 170 societies. They've never found a society that did not have it.

You can get into a very fancy car and know everything about the engine, but when you drive in that car, you feel that rush. In the same way, I think the more you know about love, the more you can enjoy it. And knowing about your personality type, who you are and what kind of person you're dealing with gives you a great leg up.

There's magic to love... Millions of years ago we evolved three basic drives: the sex love, romantic love, and attachment to a long-term partner. These circuits are deeply embedded in the human brian. They're going to survive as long as our species survive on what Shakespeare called, this "mortal coil."