The world is a fickle place, and it's not fair. But if you're getting most of your rewards from you, then you can use that as a kind of compass, and you can be secure in the fact that you're working for the right reason, and you're going in the right direction.

People love the ocean. People are always asking me why I don't study the ocean, because, after all, I live in Hawaii. I tell them that it's because the ocean is a lonely, empty place.

A tree's wood is also its memoir.

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.

Scientists know that women gravitate to men who have a different immune system from theirs.

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

Men couldn't care less if your strands are perfectly styled and neat. In fact, he might like you more with some wildness or bedhead, since it shows you're carefree and relaxed.

In general, men are wired to notice obvious signs that convey interest in mating - a warm smile, for example - and ignore other subtleties, like if your lipstick is faded.

Most of us make up our minds in the first three minutes of meeting someone whether there's a potential for a relationship.

Neither gender is routinely more jealous - although women are more willing to work to win back a lover, while men tend to flaunt their money and status and are more likely to walk out to protect their self-esteem or save face.

Today, American women bear an average of 2.2 children that live to adulthood. Across most of Europe, women bear even fewer young.

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

I suspect privacy is a very new concept to humanity.

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

As societies continue to loosen their standards regarding what is appropriate female and male behavior, I think we are going to realize we have not only underestimated women, but also men.

Haiti is the poorest country in the western hemisphere; some say the poorest in the world.

A lot of people have been romantically in love with somebody who they feel wasn't appropriate to marry.

The brain was not built to walk into a bar, where you know nobody, and start a conversation. That's not the way humanity has courted.

Psychologists maintain that the dizzying feeling of intense romantic love lasts only about 18 months to - at best - three years.

Love is not an emotion; it is a drive.

Throughout evolution, ostracism was death indeed.

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.

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.

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