" ...he'd know about the role of mirror neurons in the brain, special cells in the premotor cortex that fire right before a person reaches for a rock, steps forward, turns away, begins to smile.Amazingly, the same neurons fire whether we do something or watch someone else do the same thing, and both summon similar feelings. Learning form our own mishaps isn't as safe as learning from someone else's, which helps us decipher the world of intentions, making our social whirl possible. The brain evolved clever ways to spy or eavesdrop on risk, to fathom another's joy or pain quickly, as detailed sensations, without resorting to words. We feel what we see, we experience others as self. "

― Diane Ackerman , The Zookeeper's Wife