The purpose of this paper is to present the essence of Ayn Rand's theory of rational egoism and to indicate how it is the only ethical theory that can provide a foundation for ethics in business. Justice, however, cannot be done to the breadth and depth of Rand's theory in so short a space as this article; consequently, I have provided the reader with a large number of references for further study. At minimum, Ayn Rand's theory, because of its originality (...) and challenge to establishment theories, should be included in all business ethics courses and discussions of business ethics. (shrink)