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.

True respect means taking other people's beliefs seriously and assuming they are adult and intelligent enough to be able to cope with it if you tell them, clearly and civility, why you think they are totally, utterly and disastrously wrong.

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.

Metaphorical tone deafness is when people are unable to discern what is of value in something. I think I'm tone deaf to poetry, for instance. Despite having studied it into a second year of university, most of it just leaves me cold.

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.

Even if we can agree that some things are natural and some are not, what follows from this? The answer is: nothing. There is no factual reason to suppose that what is natural is good (or at least better) and what is unnatural is bad (or at least worse).

If philosophy is to be a valuable part of life, we have to appreciate it for its own sake, and not just for what it's done for us lately.