Thomas Nagel

To evaluate states of affairs we use the concepts of good and bad, better and worse. To evaluate actions we use in addition the concepts of right and wrong. The classical problem is whether there is an independent aspect of morality governing the rightness and wrongness of acts and policies – either of individuals or of institutions – or whether the only truly fundamental values are good and bad, so that standards of right and wrong must be explained instrumentally, by identifying the types of actions and policies that lead to good and bad outcomes. The latter possibility was given the name ‘consequentialism’ by Elizabeth Anscombe, and its best-known version is utilitarianism. The opposite view, that the right is at least in some respects independent of the good, doesn’t have a name, but the principles that it identifies are usually called ‘deontological’ – an ugly word, but we seem to be stuck with it. Deontological principles say that whether an act is morally permitted, prohibited or required often depends not on the goodness or badness of its overall consequences but on intrinsic features of the act itself.

The persistence of terrorism appears to be impervious to its overwhelming record of failure to ‘work’, in the normal sense. Terrorists, it seems, are at least as attached to their means as to their professed ends, and to those for whom killing is an end in itself, there is not much to say by way of rational counterargument.

Pacifists are rare. Most people believe that lethal violence may be used in self-defence, or the defence of others, against potentially lethal threats. Military action is justified by a collective institutional version of this basic human right, which sets an outer limit on the right to life. Lethal aggressors who cannot be stopped by lesser means are liable to lethal attack, and this does not violate their right to life so long as they remain a threat. Killing in self-defence is distinct from execution, the killing of someone who is no longer a threat as a punishment for past conduct.

This interesting, careful and occasionally outrageous book explores the complex interaction and competition between the attitudes of affirmation and regret that are almost inevitable as we look back on our lives and celebrate or deplore the conditions and choices that have made us what we are – that underlie our successes and failures, and our personal attachments. R. Jay...

It would be best not to have to die at all, but failing that, many of us would like to have some control over the time and manner of our deaths, should we find ourselves in a condition so hopeless that there is no point in going on. At this date, in most of the world, including Britain and most of North America, the legally permissible forms of such control do not include voluntary euthanasia...