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.

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.

Women, it turns out, are built to lead - particularly in the modern world.

Men have a psychological need to show off their courage and strength. When he sees you talking to another guy, that instinct kicks in and he jumps to protect you and prove he's worthy of your love.

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.

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

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