The intrinsicist/subjectivist dichotomy, its history, its consequences, and its proper resolution are treated in much greater detail in the following sources:

• The title essay in Ayn Rand, For the New Intellectual (New York: Penguin, 1961) (more information).

• Leonard Peikoff, Objectivism: The Philosophy of Ayn Rand (New York: Meridian, 1993) (more information).