Alan Ryan

Aeon J. Skoble

Jan Narveson

Brian Satterfield

Panaetius

Sir Edwin Chadwick

James Beattie

Avicenna

Peter Carl Mentzel

Rhazes

Luigi Turco

Jack Russell Weinstein

William George Pogson Smith

John Locke

Anthony Ashley Cooper, Earl of Shaftesbury

Plotinus

Joseph Rickaby, S.J.

Chuang Tzu

Ayn Rand

Aaron Garrett

Samuel Gregg

Maia Cummings

Michael Polanyi

Winston Tingle

Peter Vallentyne

Tibor R. Machan

J.W. Semple

Lao Tzu

Rachel Ferguson

Benjamin Hoffmann

James Mill

Craig Smith

Dugald Stewart