For those who subscribe to Judeo-Christian values, right and wrong, good and evil, are derived from God, not from reason alone, nor from the human heart, the state or through majority rule.
Though most college-educated Westerners never hear the case for the need for God-based morality because of the secular outlook that pervades modern education and the media, the case is both clear and compelling: If there is no transcendent source of morality (morality is the word I use for the standard of good and evil), "good" and "evil" are subjective opinions, not objective realities.
In other words, if there is no God who says, "Do not murder" ("Do not kill" is a mistranslation of the Hebrew which, like English, has two words for homicide), murder is not wrong. Many people may think it is wrong, but that is their opinion, not objective moral fact. There are no moral "facts" if there is no God; there are only moral opinions.
Years ago, I debated this issue at Oxford with Jonathan Glover, currently the professor of ethics at King's College, University of London, and one of the leading atheist moralists of our time.
Because he is a man of rare intellectual honesty, he acknowledged that without God, morality is subjective. He is one of the few secularists who do.
This is the reason for the moral relativism -- "What I think is right is right for me, what you think is right is right for you" -- that pervades modern society. The secularization of society is the primary reason vast numbers of people believe, for example, that "one man's terrorist is another man's freedom fighter"; why the best educated were not able say that free America was a more moral society than the totalitarian Soviet Union; why, in short, deep moral confusion afflicted the 20th century and continues in this century.
That is why The New York Times, the voice of secular moral relativism, was so repulsed by President Ronald Reagan's declaration that the Soviet Union was an "evil empire." The secular world -- especially its left -- fears and rejects the language of good and evil because it smacks of religious values and violates their moral relativism. It is perhaps the major difference between America and Europe. As a New York Times article on European-American differences noted last year, "Americans are widely regarded as more comfortable with notions of good and evil, right and wrong, than Europeans. . . . " No wonder. America is a Judeo-Christian society; Europe (and the American Democratic Party) is largely secular.
Dennis Prager is a SRN radio show host, contributing columnist for Townhall.com and author of his newest book, “The Ten Commandments: Still the Best Moral Code.”