Marriages are more likely to fail when one partner not only does not mirror the other's expressions of happiness, but instead shows expressions of contempt.

Smoking is similar to hitting yourself over the head with a hammer because, when you stop, you feel better

To ensure marital bliss, a man needs to be 1.09 times taller than his partner.

Brain surgeons earn 10 times that of a general practitioner... it pays to be an expert.

We are different because our brain is wired differently. This causes us to perceive the world in different ways and have different values and priorities. Not better or worse - different.

A real man would never cry in public unless he was watching a movie in which a heroic dog died to save its master.Or if Heidi klum unbuttoned her blouse. Or he accidently dropped a full case of beer.

We prefer to find mates who are roughly as attractive as we are, which means they are more likely to stay and not look for a better offer.