Alan Ryan

Samuel Fleischacker

Immanuel Kant

Charlotte C. Thomas

Paul Carus

J.W. Semple

Francisco Suárez

Peter C. Myers

Anthony Ashley Cooper, Earl of Shaftesbury

Matt Zwolinski

Jeremy Bentham

Gershom Carmichael

Aeon J. Skoble

Plutarch

Nicholas Capaldi

Panaetius

Jeremy Shearmur

Thomas Reid

David W. Carrithers

Aaron Garrett

St. Thomas Aquinas

Mary Campbell Smith

Marcus Aurelius Antoninus

Francis Hutcheson

Hardy Bouillon

Maia Cummings

Rachel Ferguson

Jan Narveson

Thales

Brian Kogelmann

Rhazes

Khalil M. Habib

John Stuart Mill