Until recently, we regarded love as supernatural. We were willing to study the brain chemistry of fear and depression and anger but not love.

Today, American women bear an average of 2.2 children that live to adulthood. Across most of Europe, women bear even fewer young.

We spend our lives trying to get along with people so we can keep our jobs, keep our marriages together, so that we can raise our kids properly.

There exists no culture in which adultery is unknown, no cultural device or code that extinguishes philandering.

People compose poetry, novels, sitcoms - for love.

You size up someone physically in less than one second - too tall, too short, too fat, too thin, too old, too young, too stuffy, too scruffy.

When people tell you to walk a certain way, it's like not thinking of a purple tomato. You can't not do it.