That tale is a long one. His apprenticeship was spent in Arabic Bagdad, sitting at the feet of noted scholars, and taking in knowledge not only of his own Persian Sufism, but also of the science and learning which had been gathered in the home of the Abbaside Caliphs. His journeyman-years took him all through the dominions which were under Arab influence--in Europe, the Barbary States, Egypt, Abyssinia, Arabia, Syria, Palestine, Asia Minor, India. All these places were visited before he returned to Shiraz, the "seat of learning," to put to writing the thoughts which his sympathetic and observing mind had been evolving during all these years. This time of his mastership was spent in the seclusion almost of a recluse and in producing the twenty-two works which have come down to us. An Oriental writer says of these periods of his life: "The first thirty years of Sa'di's long life were devoted to study and laying up a stock of knowledge; the next thirty, or perhaps forty, in treasuring up experience and disseminating that knowledge during his wide extending travels; and that some portion should intervene between the business of life and the hour of death (and that with him chanced to be the largest share of it), he spent the remainder of his life, or seventy years, in the retirement of a recluse, when he was exemplary in his temperance and edifying in his piety." Of Sa'di's versatility, these twenty-two works give sufficient evidence. He could write homilies (Risalahs) in a Mystic-religious fashion. He could compose lyrics in Arabic and Turkish as well as in Persian. He was even led to give forth erotic verses. Fondly we hope that he did this last at the command of some patron or ruler! But Sa'di is known to us chiefly by his didactic works, and for these we cherish him. The "Bustan," or "Tree-Garden," is the more sober and theoretical, treating of the various problems and questions of ethics, and filled with Mystic and Sufic descriptions of love. His other didactic work, the "Gulistan," is indeed a "Garden of Roses," as its name implies; a mirror for every one alike, no matter what his station in life may be. In prose and in poetry, alternating; in the form of rare adventures and quaint devices; in accounts of the lives of kings who have passed away; in maxims and apothegms, Sa'di inculcates his worldly wisdom--worldly in the better sense of the word. Like Goethe in our own day, he stood above the world and yet in it; so that while we feel bound to him by the bonds of a common human frailty, he reaches out with us to a higher and purer atmosphere. Though his style is often wonderfully ornate, it is still more sober than that of Háfiz. Sa'di is known to all readers of Persian in the East; his "Gulistan" is often a favorite reading-book.