I am very Aristotelian in approach - not in detail - so I always find I'm saying things that get people frustrated like 'It's a matter of balance and judgement'. To a lot of philosophers these are terrible words because they're admitting of vagueness and uncertainty. The more I've done philosophy, the more I've become convinced that that is the way it is.

Heathens are unredeemed outcasts from heaven who roam the planet without hope of surviving the deaths of their bodies. They may have values but they are not secured by any divine source. Yet we embrace this because we think it represents the truth.

Most people believe, more or less, that the value of a human life is the same, irrespective of where on the planet it happens to find itself. But, of course, not every life has the same value for us.

Philosophy has to be enquiring; it can take nothing on faith, and its methods are based not on the blind acceptance of authority, but on establishing truths by reason and argument.

No genuine choice is ever simply a matter of the arbitrary exercise of will. Take your choice of lunch today. You can't decide to want anything, but what you want will at least in part be a result of a series of other choices and judgments you've made in your life to date.

If I hammer my own thumb while doing some DIY, it's not nice, but it's not the end of the world. To care obsessively about similar levels of discomfort in animals seems to be a case of mistaken moral priorities.

It's not leftovers that are wasteful, but those who either don't know what to do with them or can't be bothered.