Over the centuries, we’ve moved on from Scripture
to accumulate precepts of ethical, legal and moral
philosophy. We’ve evolved a liberal consensus of
what we regard as underpinnings of decent society,
such as the idea that we don’t approve of slavery or
discrimination on the grounds of race or sex, that we
respect free speech and the rights of the individual. All of these things that have
become second nature to our morals today owe very little to religion, and mostly
have been won in opposition to the teeth of religion.
– Richard Dawkins