What is sufism?

Shakespeare in the light of sacred art Lings, Martin Muhammad: his life based on the earliest sources Lings, Martin Muhammad: His life based on the earliest sources Lings, Martin Ancient beliefs and modern superstitions Lings, Martin A Sufi saint of the twentieth century Lings, Martin Symbol & archetype Lings, Martin Splendours of Qur'an calligraphy & illumination Lings, Martin Ancient beliefs and modern superstitions Lings, Martin