Oskar Pfungst
Ernst Mach
Leonardo da Vinci (tr. Maurice Baring)
Bertrand Russell
Andrew Dickson White
Alfred North Whitehead
Charles Fort
Henry Drummond
Vivian Phelips
John Fiske
Wallace D. Wattles
C. A. Mace
William Stanley Jevons
Francis Bacon
William James
Thomas Henry Huxley
John Ruskin
John William Draper
