Any time you choose not to hide your tattoo, you're limiting your social sphere, because they're not popular in big business.

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.

Men don't need linguistic talent; they just need courage and words.

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.

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

People have been looking for love potions since hunter-gatherer societies.

Women are naturally prone to compete over their mates.