Paul Bloom

Our best hope for the future is not to get people to think of all humanity as family - that's impossible. It lies, instead, in an appreciation of the fact that, even if we don't empathize with distant strangers, their lives have the same value as the lives of those we love.

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.

I am so tired of ruggedly handsome heroes. I don't know too many ruggedly handsome people who are necessarily nice people. In fact, the beautiful people have a big handicap because they rely too much on their appearance and don't bother to become interesting.

To my astonishment, everything that I had assumed was now questioned by the findings. What started off as a search for identity that appeared to be purely Scottish in origin ended up as a discovery of my migrant roots - indeed an understanding that almost all of our families, at some stage, have been migrants - and my European roots.