Suffering is a byproduct of evolution by natural selection, an inevitable consequence that may worry us in our more sympathetic moments but cannot be expected to worry a tiger - even if a tiger can be said to worry about anything at all - and certainly cannot be expected to worry its genes.

If you want to do evil, science provides the most powerful weapons to do evil; but equally, if you want to do good, science puts into your hands the most powerful tools to do so

To describe religions as mind viruses is sometimes interpreted as contemptuous or even hostile. It is both. I am often asked why I am so hostile to organized religion.

[Invading Iraq] will unite the entire Arab world against the West.

You can never be absolutely certain that anything doesn't exist. But you can show that it's unlikely.

It is important not to confuse race and religion.

If you want to do bad things, science is the most powerful way to do them.