Hi GOP_Jeff. I don't have the book here (I'm at my parents house for the holidays). It's actually called
How we Believe though. My mistake. More info:
Michael Shermer,
How We Believe: Science, Skepticism, and the Search for God (New York: Owl Books, 2000), p. 25.
As for a point made by another individual, the "do unto others rule" was around way before the Bible. I will look for more data on pre-biblical morality that I can link to online. The following link is to an article on the
New Orleans Secular Humanist Association website. There is a slight bias as a result but all the information is factual to my knowledge. I actually quite enjoyed reading it. Really was an eye-opener into how civilized so called "barbarian" civilizations of the past actually were.
http://nosha.secularhumanism.net/essays/sierichs6.html
As for where we would get morals if not from our religion, one smarter than me has observed that morality comes first from love that we feel for our families. It is this desire to see only the best and to avoid any harm coming to them that probably evolved into fullblown codes of ethics and morality. For instance, no-one in their right mind would kill their own son, no matter what he did (Take that, Abraham!).
Morality becomes harder as we come out further from the family unit. It still seems hard to kill a friend, less difficult to kill a member of the community, and the easiest to kill those outside our community. The whole thing is compounded when a threat against the family/community is perceived. Then it becomes even easier to act immorally against "outsiders."
Part of the problem today is that as our cities get larger, our communities are getting smaller and smaller, as most people live in cities or suburbs where the majority of the community members are strangers (atleast in the 1st world). This makes it easier for people to act immorally, as the personal connection inevitably breaks down. In general, people only keep in contact with a maximum of about 150 other individuals. Any more and the tribal bond (man lived in tribes for most of its existence as a species) does not seem to hold.