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.

[Women] tend to collect more pieces of data when they think, put them into more complex patterns, see more options and outcomes. They tend to be contextual, holistic thinkers.

Romantic love is an obsession. It possesses you. You lose your sense of self. You can’t stop thinking about another human being.

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

There are cognitive processes and limbic reactions associated with basic emotions. And you can change brain chemistry, but you're still not going to change memories and experiences in a human being.

Kissing is not just kissing. It is a major escalation or de-escalation point in a powerful process of mate choice.

As social animals, we need to exchange juicy tales about someone - to connect with one another. For millions of years our forebears must have sat around the campfire, whispering about everyone they knew.