Michael Murphy Chögyam Trungpa Rinpoche Ken Wilber Pema Chödrön Katja Wolff John Wellwood Karl Popper Caroline Myss Pema Chodron Hafiz Jack Kornfield Gendün Rinpoche Rumi Lama Ole Nydahl James Redfield Anthony Robbins Eckhart Tolle James Clavell Malcolm Gladwell Karl May Maurice Sendak Ralph Waldo Emerson Henry David Thoreau Shel Silverstein Dr. Seuss