 In the mid @-@ 1960s , J. D. Salinger was himself drawn to Sufi mysticism through the writer and thinker Idries Shah 's seminal work The Sufis , as were others writers such as Doris Lessing and Geoffrey Grigson , and the poets Robert Graves and Ted Hughes . As well as Idries Shah , Salinger also read the Taoist philosopher Lao Tse and the Hindu Swami Vivekananda who introduced the Indian philosophies of Vedanta and Yoga to the Western world . 
