Since the definition of a concept is formulated in terms of other concepts, it
enables man, not only to identify and retain a concept, but also to establish
the relationships, the hierarchy, the integration of all his concepts and thus
the integration of his knowledge. Definitions preserve, not the chronological
order in which a given man may have learned concepts, but the logical order of
their hierarchical interdependence.
Copyright © 1986 by Harry Binswanger.
Introduction copyright © 1986 by Leonard Peikoff.
All rights reserved. For information address New American Library.
The Ominous Parallels, by Leonard Peikoff.
Copyright © 1982 by Leonard Peikoff. Reprinted with permission of
Stein and Day Publishers. Excerpts from The Romantic Manifesto,
by Ayn Rand. Copyright © 1971, by The Objectivist.
Reprinted with permission of Harper & Row, Publishers, Inc. Excerpts from
Atlas Shrugged, copyright © 1957 by Ayn Rand, The
Fountainhead, copyright © 1943 by Ayn Rand, and For the
New Intellectual, copyright © 1961 by Ayn Rand. Reprinted by
permission of the Estate of Ayn Rand. Excerpts from Philosophy: Who
Needs It, by Ayn Rand. Copyright © 1982 by
Leonard Peikoff, Executor, Estate of Ayn Rand. Reprinted by
permission of the Estate of Ayn Rand. Excerpts from “The Philosophy
of Objectivism” lecture series. Copyright © 1976 by
Leonard Peikoff. Reprinted by permission. Excerpts from Alvin
Toffler’s interview with Ayn Rand, which first appeared in
Playboy magazine. Copyright © 1964. Reprinted by permission
of Alvin Toffler. All rights reserved including the right of reproduction
in whole or in part in any form. Used by arrangement with Plume, a member of
Penguin Group (USA), Inc.