Christmas is a rare occasion when we are reminded that we have obligations to people we did not choose to be related to, and that love is not just a spontaneous feeling but something we sometimes really have to work at, with people we may not even much like.

Atheists have to live with the knowledge that there is no salvation, no redemption, no second chances. Lives can go terribly wrong in ways that can never be put right.

When you try to cool down hot emotions, what tends to happen is that you end up either repressing them or losing them altogether. Neither is desirable. Without emotion, much social interaction loses its meaning, or changes for the worse.

Many people are never happier than when they get the opportunity to complain, while others are deeply unhappy with how things are but just accept the fact. Complaint occurs when we refuse to accept that things are wrong and we do something about it, even if that something is simply articulating our unease.

I don't feel proprietorial about the problems of philosophy. History has taught us that many philosophical issues can grow up, leave home and live elsewhere.

I maintain the importance of an absolute prohibition against torture, while acknowledging that even absolute prohibitions can sometimes be broken. If that is a contradiction, it is a contradiction that ethics has to embrace, or else it becomes like glass: hard, clear, but fatally inflexible.

When you try to translate any kind of real-life problem into a neat logical form, you're almost always simplifying it. We need a kind of blend - we need to use not just tools of logic, which are important and valuable - I'm not denying that, but also tools of judgement, and of inductive and abductive reasoning which can also inform.