Helen Fisher

Any kind of novelty or excitement drives up dopamine in the brain, and dopamine is associated with romantic love.

When you massage someone, the levels of oxytocin go up in the brain, and oxytocin is one of the chemicals that drives attachment.

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

Why do men fight who were born to be brothers?

If we think of the immune system as a machine, then we are far from even knowing all of its parts.

I watch comedies most of the time. That's what I gravitate toward. But I think the kinds of roles people see me in are sort of the opposite of that. I'm not really sure why.