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

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

Sometimes we fall in love with somebody who will probably never love us, for reasons having nothing to do with us but with their own mindset, their chemistry.

There's a lot of talk about the positive aspects of love. We as a society downplay the danger, the anxiety, and the disappointment. We romanticize romance.

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

Men tend to be hierarchical, but women are driven to make lateral connections so they can cooperate.

When you massage someone, the levels of oxytocin go up in the brain, and oxytocin is one of the chemicals that drives attachment.