“Men with high baseline levels of testosterone marry less frequently, have more adulterous affairs, commit more spousal abuse, and divorce more often.”

“If two very different people pool their DNA, they'll create more genetic variety, and their young will come to the job of parenting with a wider array of skills.”

“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.”

“Your sweetheart calls you by another's name. His eyes linger too long on your best friend. He talks with excitement about a girl at work. And the fire catches. Jealousy - that sickening combination...”

“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.”

“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 c...”

“Only once in your life, I truly believe, you find someone who can completely turn your world around. You tell them things that youve never shared with another soul and they absorb everything you sa...”

“As he read, I fell in love the way you fall asleep: slowly, and then all at once.”

“I love you without knowing how, or when, or from where. I love you simply, without problems or pride: I love you in this way because I do not know any other way of loving but this, in which there i...”

“I shiver, thinking how easy it is to be totally wrong about people-to see one tiny part of them and confuse it for the whole, to see the cause and think it's the effect or vice versa”

“At sunrise everything is luminous but not clear.”

“I think it's impossible to really understand somebody, what they want, what they believe, and not love them the way they love themselves.”

“Heaven resonates when one sings wholeheartedly.”