???? – ????
Semple was an advocate and translator of Kant.
John Stuart Mill
Joseph Butler
Roderick T. Long
Jennifer A. Frey
Ralph McInerny
Aaron Garrett
Thales
Charlotte C. Thomas
William George Pogson Smith
Paul Carus
Ayn Rand
Plutarch
William Godwin
Plotinus
Michel de Montaigne
Aristotle
Aeon J. Skoble
Samuel Gregg
Jean-Jacques Rousseau
Michael Huemer
Maia Cummings
Bas van der Vossen
Thomas Reid
Eric Mack
Michael J. Seidler
Brian Satterfield
Peter Paul Seaton Jr.
Blaise Pascal
Francis Hutcheson
Evelyn Shirley Shuckburgh
John Locke
Alan Ryan