Khalil Gibran
Sam Harris
H. van den Boogaard
Erich Fromm
Eveline Brandt
Han van den Boogaard
Franklin Merrell-Wolff
Krishnamurti
Farid Ud-D Attar
Neil Douglas-Klotz
Joko Beck
W.S. Rahula
Tiny Fisscher
Roman Krznaric
Thich Nhat Hanh