Most libertarians think of themselves as in some sense egoists. If they believe in rights, they believe these rights belong to them as individuals. If not, they nonetheless look to themselves and others as so many individuals possessed of power to be reckoned with. Either way, they assume that the opposite of egoism is altruism. The altruists, Christian or Maoist, agree. A cozy accomodation; and, I submit, a suspicious one. What if this antagonistic intedependence, this reciprocal reliance reflects and conceals an accord? Could egoism be altruism's loyal opposition?

Preface to The Right To Be Greedy (1983 edition)