There is no way of my pursuing my good which is necessarily antagonistic to you pursuing yours because the good is neither mine peculiarly nor yours peculiarly—goods are not private property. Hence Aristotle’s definition of friendship, the fundamental form of human relationship, is in terms of shared goods. The egoist is thus, in the ancient and medieval world, always someone who has made a fundamental mistake about where his own good lies and someone who has thus and to that extent excluded himself from human relationships.
