How do we know right from wrong? Scottish philosopher Adam Smith came up with the idea of the Impartial Spectator, someone who watches and judges us and our behavior.

But what about businesses? Is there any morality there?

The truth is that most businesses are ethical. Indeed, the more ethical they are, the more they succeed, because consumers often vote with their wallets, choosing to deal with those who create positive results in society. Whole Foods is one such example. How so?

Find out in Morality in the Marketplace.