- Eknath Easwaran
- Ken Wilber
- Rupert Sheldrake
- Charles Fillmore
- Gary R. Renard
- Candace B. Pert
- Chris Idzikowski
- Richard Maurice Bucke
- Gregg Levoy
- Amit Goswami
- Raphael Cushnir
- Steve Nison
- Richard Smoley
- Paul Smith
- Thomas W. Shepherd
- Lee Glickstein
- W. Edward Olmstead
- Robert W. Ward
- Kate DeVore
- Starr Cookman