The unsettled conditions following the Mongol invasion of Iran led him to wander abroad through Anatolia, Syria, Egypt, and Iraq. He also refers in his work to travels in India and Central Asia. Saadi is very much like Marco Polo who travelled in the region from 1271 to 1294. There is a difference, however, between the two. While Marco Polo gravitated to the potentates and the good life, Saadi mingled with the ordinary survivors of the Mongol holocaust. He sat in remote teahouses late into the night and exchanged views with merchants, farmers, preachers, wayfarers, thieves, and Sufi mendicants. For twenty years or more, he continued the same schedule of preaching, advising, learning, honing his sermons, and polishing them into gems illuminating the wisdom and foibles of his people.
For Western students, Bustan and Gulistan have a special attraction; but Saadi is also remembered as a great panegyrist and lyricist, the author of a number of masterly general odes portraying human experience, and also of particular odes such as the lament on the fall of Baghdad after the Mongol invasion in 1258. His lyrics are to be found in Ghazaliyat ("Lyrics") and his odes in Qasa'id ("Odes"). He is also known for a number of works in Arabic. The peculiar blend of human kindness and cynicism, humour, and resignation displayed in Saadi's works, together with a tendency to avoid the hard dilemma, make him, to many, the most typical and loveable writer in the world of Iranian culture.