Hans Knibbe
John Gray
Erich Fromm
Bob Rigter
Han van den Boogaard
Koos Zondervan
B.K.S. Iyengar
Leslie Kaminoff
Stefanie Arend
Norbert Scheuer
Roek Lips
Justus Kramer Schippers
Kahlil Gibran
W.S. Rahula
Thich Nhat Hanh
Linda Rood