By Tom Toles
People are born with an internal moral compass, or very occasionally without one. Some guidance and example help shape it, but those rarely fundamentally change it.
Everything else is just arguing. There has been a (VERY!) strong tendency throughout history for powerful people to codify THEIR compass or interests and tell you it came straight from God. This has had the effects of unifying groups and structuring a stable social order, and also warfare and persecution and butchery. Occasionally, a persuasive person will gather followers who voluntarily embrace a set of compelling beliefs and they are often set upon savagely as heretics until they become established enough to start punishing others.
The assertion that morality derives solely from some part of this system is insulting. A free and just society is one in which people of varied moral systems attempt to work with each other, both on moral issues and practical ones. People know this, but it’s WAY more satisfying to cater only to your own sense of what’s right. Will we ever work this out? God help us.
http://www.washingtonpost.com/blogs/tom-toles/post/sermonette/2011/06/28/AGyvPCpH_blog.html