We're exposed and carry in our bodies multiple chemicals, and we have to understand how they interact. Both how they individually interact and the thousands of effects they can produce when they interact with the receptors that run our bodies.

When the eyes of a woman that a man finds attractive look directly at him, his brain secretes the pleasure-inducing chemical dopamine - but not when she looks elsewhere.

We learn best with focused attention. As we focus on what we're learning, the brain maps that information on what we already know making new neural connections

Simply paying attention allows us to build an emotional connection. Lacking attention, empathy hasn't a chance.

Threats to our standing in the eyes of others are remarkably potent biologically, almost as powerful as those to our very survival.

Fear, in evolution, has a special prominence: perhaps more than any other emotion it is crucial for survival.

When we focus on others, our world expands.