As societies continue to loosen their standards regarding what is appropriate female and male behavior, I think we are going to realize we have not only underestimated women, but also men.

We're not very dangerous animals; we don't have a horn like a rhino or quills like a porcupine.

We evolved in a tropical climate where the smells of plants and flowers were all around us. We spent a lot of time in the trees with a lot of sunlight and no clothes.

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.

Romantic love is an addiction: a perfectly wonderful addiction when it's going well, and a perfectly horrible addiction when it's going poorly.

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

The brain was not built to walk into a bar, where you know nobody, and start a conversation. That's not the way humanity has courted.