Alan Ryan

Nicholas Capaldi

Virginia Postrel

Peter Carl Mentzel

Plutarch

Michael Huemer

J.W. Semple

Ralph McInerny

Khalil M. Habib

Adam Smith

Titus Lucretius Carus

David W. Carrithers

Daniel L. Dreisbach

Avicenna

Marcus Aurelius Antoninus

Matt Zwolinski

Jack Russell Weinstein

Benjamin Hoffmann

John Locke

Michael J. Seidler

David Conway

Aaron Garrett

Anthony Ashley Cooper, Earl of Shaftesbury

Peter Paul Seaton Jr.

Joseph Butler

Evelyn Shirley Shuckburgh

Tibor R. Machan

Michael Silverthorne

Ralph C. Hancock

Thomas Hobbes

William George Pogson Smith

Peter Vallentyne

Stuart D. Warner