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.

The main characteristics of romantic love are craving: an intense craving to be with a particular person, not just sexually, but emotionally.

My hypothesis is that conservative Republicans have very clear values, and when you have that, you're simply more relaxed.

The reason you take antidepressants is to feel calm. And romantic love is not calm -it's elation, it's mood swings, and you're killing all that when you take the drug.

I don’t think we’re an animal that was built to be happy; we are an animal that was built to reproduce.

Natural beauty really entices men. They will tell you this time and time again, and studies consistently prove it.

Men want to think women don't cheat, and women want men to think they don't cheat, and therefore the sexes have been playing a little psychological game with each other.