"Notes on Lucretius," Liberalism Ancient and Modern, Basic Books, 1968. Reprint: University of Chicago Press, 1995.
Essays
On the Minos
Liberalism Ancient and Modern, Basic Books, 1968. Reprint: University of Chicago Press, 1995.
Natural Law
"Natural Law," International Encyclopedia of the Social Sciences, Vol. 2 (1968). Reprinted in Studies in Platonic Political Philosophy.
John Locke as “Authoritarian”
"John Locke as 'Authoritarian,'" review of John Locke: Two Tracts on Government, by Philip Abrams, Intercollegiate Review, Vol. 4, No. 1 (November-December 1967).
Notes on Maimonides’ Book of Knowledge
"Notes on Maimonides' Book of Knowledge," Studies in Mysticism and Religion Presented to Gershom G. Scholem on His Seventieth Birthday by Pupils, Colleagues, and Friends, Magnes Press, The Hebrew University, 1967. Reprinted in Studies in Platonic Political Philosophy.
A Note on Lucretius
"A Note on Lucretius," Natur und Geshichte: Karl Lowith zum 70, Geburtsag. W. Kohlhammer Verlag, 1967. Reprinted in "Notes on Lucretius," Liberalism Ancient and Modern.
Preface to the English Translation of Spinoza’s Critique of Religion
"Preface to the English Translation," Spinoza's Critique of Religion, trans. E. M. Sinclair, Schocken Books, 1965. Reprinted in English translation of Spinoza's Critique of Religion and Liberalism Ancient and Modern.
Review of Samuel I. Mintz: The Hunting of Leviathan
Review of The Hunting of Leviathan: Seventeenth-Century Reactions to the Materialism and Moral Philosophy of Thomas Hobbes, by Samuel I. Mintz, Modern Philology, Vol. 62, No. 3 (February 1965).
Review of C. B. Macpherson: The Political Theory of Possessive Individualism
Review of The Political Theory of Possessive Individualism, by C. B. Macpherson, Southwestern Social Science Quarterly, Vol. 45, No. 1 (June 1964). Reprinted in Studies in Platonic Political Philosophy.
The Crisis of Our Time and The Crisis of Political Philosophy
"The Crisis of Our Time" and "The Crisis of Political Philosophy," in The Predicament of Modern Politics, ed. Harold J. Spaeth, University of Detroit Press, 1964.