The ITOE Seminar transcription was published in 1990. Leonard Peikoff’s OPAR was published in 1991. The following are the points at which Peikoff uses in OPAR oral remarks of Rand that had been put into writing only with the Peikoff/Binswanger addition of the Appendix to ITOE. Resort to using the Appendix in OPAR explications occurs only where those ideas of Rand had not been put down in writing by her for publication as parts of her philosophy. Relative importance of these points in Rand’s metaphysics and epistemology should be judged by thinking about what else in Rand’s metaphysics and epistemology hinges uniquely on them.
Chapter 1 – Reality
OPAR page 5, note 4 (ITOE App. 144–49)
“The concept ‘existence’ does not specify that the concept of a physical world exists.”[4]
OPAR page 8, note 9 (ITOE App. 159–62)
“‘It is this implicit knowledge’, Miss Rand holds, ‘that permits [man’s] consciousness to develop further’.”[9]
OPAR page 13, note 13 (ITOE App. 264-79)
“By extension from this primary sense {rock, person, table}, ‘entity’ may be used in various contexts to denote a vast array of existents, such as the solar system, General Motors, or the smallest subatomic particle. But all ‘entities’ like these are reducible ultimately to combinations, components, or distinguishable aspects of ‘entities’ in the primary sense.”[13]
Chapter 2 – Sense Perception and Volition
OPAR page 47, note 3 (ITOE App. 279–82)
“The source of sensory form is thus not consciousness, but existential fact independent of consciousness; i.e., the source is the metaphysical nature of reality itself. In this sense, everything we perceive, including those qualities that depend on man’s physical organs, is ‘out there’.”[3]
Chapter 3 – Concept-Formation
OPAR page 91, note 21 (ITOE App. 204–17)
“Only when the child has first conceptualized separately the various perceptually given entities is he capable of the more extensive acts of abstraction and integration that identify their common denominators. These latter are not available on the perceptual level . . . . Similarly, a child cannot identify distinctions among men—he cannot grasp types of men, such as doctor or teacher—until he has first grasped and conceptualized man.” [21]
Chapter 4 – Objectivity
OPAR page 139, note 19 (ITOE App. 250–51).
“Let me conclude the discussion of hierarchy by explaining the principle of ‘Rand’s Razor’.” [19]