Howard Pospesel
William I. Fletcher
Paul Tidman
Peter Kreeft
Trudy Govier
Raymond M. Smullyan
Alfred North Whitehead
Madsen Pirie
D. P. Gorskiĭ
Robert Hugh Ennis
Lewis Carroll
Daniel J. Levitin
Arthur Schopenhauer
George Pólya
Irving Marmer Copi
William Stanley Jevons
Thomas L. Floyd
M. Morris Mano
Kenneth H. Rosen