By Kahlil Gibran
By A.C. Bhaktivedanta Swami Prabhupada
By Gary Lachman
By Hildegard of Bingen, Fiona Bowie, Oliver Davies, Robert Carver
By Peers, E. Alison
By Guy, Henry
By Eckhart, Meister, Backhouse, Halcyon C.
By Leloup, Jean-Yves, Needleman, Jacob
By Rolle, Richard, Backhouse, Halcyon C.
By of Avila Saint Teresa
By Hafez
By Iain Matthew, Jean Vanier
By Atkinson, William Walker
By Nes, Solrunn
By Nigel Suckling
By Parrinder, Geoffrey
By Martin Israel
By Underhill, Evelyn
By Osho
By Stokes, Gillian
By Wilson, Colin
By Hope, Murry
By Garen, Nancy
By Ergin, Nevit O., Johnson, Will
By Camp, L. Sprague De
By Singer, Andre, Lynette
By Paul Mason
By Torkington, David
By Fatula, Mary Ann
By Rolheiser, Ronald, Culligan, K., Copsey, R., Fleming, U., Matthew, I., McGowan, John