A chimpanzee who is really gearing up for a fight doesn't waste time with gestures but just goes ahead and attacks.

The primate laugh is given in playful contexts, and as such has a strong similarity to the human laugh.

As in a Russian doll, however, the outer layers always contain an inner core. Instead of evolution having replaced simpler forms of empathy with more advanced ones, the latter are merely elaborations on the former and remain dependent on them. This also means that empathy comes naturally to us. It is not something we only learn later in life, or that is culturally constructed.

The sturdiest pillars of human morality are compassion and a sense of justice.

The possibility that empathy resides in parts of the brain so ancient that we share them with rats should give pause to anyone comparing politicians with those poor, underestimated creatures.

A chimpanzee who is really gearing up for a fight doesn't waste time with gestures but just goes ahead and attacks.

When someone brutally kills someone else, we call him "animalistic." But we consider ourselves "human" when we give to the poor.