Like most animals, we're wired to associate height with power.

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

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

I can't conceive of caring more about my president than my own partner.

Men and women are like two feet; they can help each other get ahead.

People live for love. They kill for love. They die for love. They have songs, poems, novels, sculptures, paintings, myths, legends. It's one of the most powerful brain systems on Earth for both great joy and great sorrow.

We're apt to fall in love with those who are mysterious and challenging to us.