By Hugel, Friedrich von
By Carse, James P.
By Jones, R.H.
By Christopher Knight, Robert Lomas
By upjohn, Sheila
By Nelson, John
By Colledge, OSA, Edmund
By Waal, Esther de
By Campbell, Eileen
By Maquarrie, John
By Furlong, Monica
By Roker, Penny
By Beer, Frances
By King, Ursula
By Julian of Norwich, Warrack, Grace
By Park, Tarjei, Williams, Rowan
By Bourgeault, Cynthia
By Steuart, R.H. J., Peers, E. Allison
By Mommaers, Paul, Bragt, Jan van
By Joscelyn Godwin
By Obbard, Elizabeth Ruth
By O'Neal, David
By Hardie, Titania
By Carole Zaleski (Lecturer on the Study of Religion, Lecturer on the Study of Religion, Harvard University)
By Alice A. Bailey
By Titus Burckhardt
By Wilfrid McGreal
By Brother Ramon
By Coelho, Paulo, Paulo Coelho