In modern America, February 2 is best known as Groundhog Day. But it also marks the birth of one of the most praised and criticized thinkers of the past century – Ayn Rand. Rand sold more than 30 million books. Atlas Shrugged has been ranked behind only the Bible as an influence on readers’ lives. She has also been stridently attacked for issues such as her militant atheism. But perhaps least understood has been her full-bore rejection of altruism. On her birthday, it is worth reconsideration. Altruism has commonly been held up as the standard for moral behavior. But Rand...