 By 1964 , Lessing had published six novels , but grew disillusioned with Communism and , after reading The Sufis by Idries Shah , turned her attention to Sufism , an Islamic belief system . This prompted her to write her five @-@ volume " space fiction " series , Canopus in Argos : Archives , which drew on Sufi concepts . The series was not well received by some of her readers , who felt she had abandoned her " rational worldview " . 
 By 1964 , Lessing <a href='been_done' title='1'><mark>had</mark></a> published six novels , but grew disillusioned with Communism and , after reading The Sufis by Idries Shah , turned her attention to Sufism , an Islamic belief system . This prompted her to write her five @-@ volume " space fiction " series , Canopus in Argos : Archives , which drew on Sufi concepts . The series was not well received by some of her readers , <a href='null_relcl' title='2'><mark>who</mark></a>felt she <a href='been_done' title='3'><mark>had</mark></a> abandoned her " rational worldview " . 
By 1964 , Lessing done published six novels , but grew disillusioned with Communism and , after reading The Sufis by Idries Shah , turned her attention to Sufism , an Islamic belief system . This prompted her to write her five @-@ volume " space fiction " series , Canopus in Argos : Archives , which drew on Sufi concepts . The series was not well received by sum of her readers , felt she done abandoned her " rational worldview " .