We cannot, of course, disprove God, just as we can't disprove Thor, fairies, leprechauns, and the Flying Spaghetti Monster. But, like those other fantasies that we can't disprove, we can say that God is very, very improbable.

Pope Francis seems to be a much nicer man than Pope Benedict, but I'm not sure that his views on things that really matter are all that different. Whereas Benedict was perhaps a wolf in wolf's clothing, Francis is perhaps a wolf in sheep's clothing.

You can't imagine how gratifying it is to have a reader come up to you and say, 'You changed my life.'

You could give Aristotle a tutorial. And you could thrill him to the core of his being. Aristotle was an encyclopedic polymath, an all time intellect. Yet not only can you know more than him about the world, you also can have a deeper understanding of how everything works. Such is the privilege of living after Newton, Darwin, Einstein, Planck, Watson, Crick and their colleagues.

Nobody would seriously describe a tiny child as a Marxist child or an Anarchist child or a Post-modernist child. Yet children are routinely labelled with the religion of their parents. We need to encourage people to think carefully before labelling any child too young to know their own opinions and our adverts will help to do that.

I'd like everybody to be secular. I suppose I have to say politically I would like religion to become gentler and nicer and to stop interfering with other people's lives, stop repressing women, stop indoctrinating children, all that sort of thing. But I really, really would like to see religion go away altogether.

Secularism is categorically not saying that the religious may not speak out publicly or have a say in public life. It is about saying that religion alone should not confer a privileged say in public life, or greater influence on it. It really is as simple as that.