Oscar Wilde
Franz Kafka
Aldous Huxley
Viktor E. Frankl
Ovid
Napoleon Hill
Norman Vincent Peale
Veronica Roth
Émile Durkheim
Stephen R. Covey
Robin S. Sharma
Stephen King
Wayne W. Dyer
American Psychological Association.
Eckhart Tolle
Clarissa Pinkola Estés
Erich Fromm
Donna Tartt
Carl Sagan