I think there's some evidence that we're empathic by nature. There is some evidence from studies of babies and young children that they resonate with the pain of others, and there's some work by Frans de Waal that other primates also resonate with the pain of others.

It has been a period where people have been far nicer to one another in every possible way. I'm not saying it's because we're dropping our empathy that we're nicer to each other, just that the drop doesn't seem to be causing any harm.

Families survive the terrible twos because toddlers aren't strong enough to kill with their hands and aren't capable of using lethal weapons.

I'm not a pacifist. I think the suffering of innocent people can be a catalyst for moral action. But empathy puts too much weight on the scale in favor of war. Empathy can really lead to violence.

The irrationality of disgust suggests it is unreliable as a source of moral insight. There may be good arguments against gay marriage, partial-birth abortions and human cloning, but the fact that some people find such acts to be disgusting should carry no weight.

Empathy zooms you in on an individual and, as a result, it's narrow, it's innumerate, it's racist, it's very biased.

The fact that something can be used for good isn't necessarily a knockdown argument for it.