Alan Ryan

Peter Vallentyne

Michael Huemer

Blaise Pascal

Khalil M. Habib

Luigi Turco

Avicenna

Henry B. Veatch

William Godwin

Sir James Mackintosh

Virginia Postrel

Ralph McInerny

Francis Edward Sparshott

Immanuel Kant

Aeon J. Skoble

Thomas Reid

Michael J. Seidler

Epictetus

Nicholas Capaldi

Brian Satterfield

Paul Carus

Plutarch

J.W. Semple

Jack Russell Weinstein

Lao Tzu

Jennifer A. Frey

David Conway

Aaron Garrett

Panaetius

Andrea Branchi

Mo Tzu

Joseph Butler

Anthony Ashley Cooper, Earl of Shaftesbury