Morality is not just something that people learn, argues Yale psychologist Paul Bloom: It is something we are all born with. At birth, babies are endowed with compassion, with empathy, with the beginnings of a sense of fairness. It is from these beginnings, he argues in his new book Just Babies, that adults develop their sense of right and wrong, their desire to do good — and, at times, their capacity to do terrible things. Bloom answered questions recently from Mind Matters editor Gareth Cook.