Khalil Gibran, Napoleon Hill, Florence Scovel Shinn, Wallace D. Wattles, Marcus Aurelius, James Allen, Russell H. Conwell, P.T. Barnum, Henry Harrison Brown
Tim Cooke, Jacob Field, Andrew Kerr-Jarrett, Michael Kerrigan, David Anderson, Joanne Bourne, Helen Douglas-Cooper, Mark Collins Jenkins, Adrian Gilbert, Jenny Macleod, Susan Pattie, Donald Sommerville, Joe Yogerst