Men fall in love faster than, and just as often as, women.

Today, most women are surrounded by ingenious gadgets. They don't grow the peas or raise the chicken that they serve for dinner; instead they hunt and gather in the grocery store. They go through catalogs or department stores to buy clothes instead of shearing sheep, carding wool, and weaving cloth for skirts and coats and blankets.

Both sexes like the exercise and challenge of sports, but for men it's also a basic display behavior for impressing and winning a mate.

Jealousy can even be good for love. One partner may feel secretly flattered when the other is mildly jealous. And catching someone flirting with your beloved can spark the kind of lust and romance that reignites a relationship.

A lot of people head into courtship looking for fireworks. Don't pass up a chance by dumping someone after a first date because you don't feel the fireworks. The fireworks can happen at any time and be maintained.

When chimps threaten, they open their mouth and show their teeth. It's a little like waving a knife in front of you. It's very primitive, and therefore bizarre.

I think you will find that with divorce will come happier remarriages.

Why do we feel jealousy? Therapists often regard the demon as a scar of childhood trauma or a symptom of a psychological problem. And it's true that people who feel inadequate, insecure, or overly dependent tend to be more jealous than others.

A woman will toss her head and a man will say, 'Oh she's trying to pick me up,' when in fact she's not doing that at all. So, women actually have to be a little careful with what they do, because men will pick up things that they didn't mean.

When you're in the throes of this romantic love, it's overwhelming - you're out of control, you're irrational, you're going to the gym at 6 A.M. every day - Why? Because she's there.

Barriers tend to intensify romance. It's called the 'Romeo and Juliet effect.' I call it 'frustration attraction.'

Love is not an emotion; it is a drive.

The reason you take antidepressants is to feel calm. And romantic love is not calm - it's elation, it's mood swings, and you're killing all that when you take the drug.

As a group, anthropologists are not too fond of people who work in the business world.

It's almost as if men who get tribal tattoos are trying to signal that they are dangerous, they're to be respected, and they're powerful.

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.

Of all the foods we share, there is nothing more primordial than meat. It's no surprise that meat-eaters still want a partner who will give, receive and share this primordial symbol of a budding partnership.

It certainly would have been adaptive for ancestral man to have a chubby wife during stressful times of famine. Not only would she have had more calories to burn, and thus more energy and endurance, but since fat stores estrogen, she would have remained fertile for longer.

You don't come home from the office to spend time with another job. Hopefully you come home to someone you can have a good time with.

Women have a better sense of smell than men do, and it's even sharper in the middle of their menstrual cycle, when estrogen levels peak and women are more likely to be deciding whether a man's attractive.

Overdone lipstick is a deterrent to men. It rubs off easily onto their skin and the edges of their shirts, so it discourages them from kissing, touching, and coming closer to you, which is what they really want to do!

You can really get poked in the back and not feel it very much, but just a feather around your lips and you really do feel it.

Saliva has testosterone and estrogen. When you kiss, you're having a chemical experience.

Along with our many human propensities, we evolved a huge cerebral cortex with which we make decisions.

I've always maintained that men were more romantic than women.

We are wired to find love.

Office romances are few, short, and not usually destructive.

Despite the myth that men are less committed, they are predisposed to desire marriage.

You've got to remember that men are men and women are women. And although a lot of similarities, there are some real differences.

Hair that looks like it's been naturally sun-bleached makes you seem youthful, like you spend a lot of time outdoors. And that appeals to most people.

At first I assumed hate was the opposite of love. But it isn't. The opposite of love is indifference.

I have always been interested in how you can walk into a room and there will be 40 people there and you are immediately drawn to one.

There is more and more data indicating that there is a biological basis to your political views.

We still have community, but we don't seem to have local community. Even in a small town where you know your neighbors and your mother's down the street, they're not in arm's length.

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.

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.

Until recently, we regarded love as supernatural. We were willing to study the brain chemistry of fear and depression and anger but not love.

The human brain is built to compare; it's Darwinian to consider an alternative when one presents itself.

Mothers really were not built to raise babies not only by themselves, but with only a partner. For millions of years, a woman had much more than just her husband to help rear her young... This whole idea of 'it takes a village to raise a child' is exactly how we're supposed to live.

I think that property is very important in this day and age. It defines you; you worked hard to get it. It's meaningful to you, and when you divorce, a lot of people have a lot of battles over their property for good reasons.

Women apparently are quite drawn to men who have differences rather than similarities in their histocompatibility system. They pick it up by smell, and they can pick it up from kissing.

People compose poetry, novels, sitcoms - for love.

Since when is anyone truly honest with anyone?

People kill for love. They die for love.

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

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

The only people you and I are likely to know in common are people in the news - politicians, journalists and celebrities.

Throughout evolution, ostracism was death indeed.

Touch is the mother of the senses. Not only are women more sensitive when they touch, but they're also more sensitive to being touched.