Abū Ḥāmid bin Abū Bakr Ibrāhīm (c. 1145 – c. 1221; Persian: ابوحامد بن ابوبکر ابراهیم), better known by his pen-names Farīd ud-Dīn (فریدالدین) and ʿAṭṭār of Nishapur (عطار نیشاپوری, Attar means apothecary), was an Iranian poet, theoretician of Sufism, and hagiographer from Nishapur who had an immense and lasting influence on Persian poetry and Sufism. He wrote a collection of lyrical poems and number of long poems in the philosophical tradition of Islamic mysticism, as well as a prose work with biographies and sayings of famous Muslim mystics. The Conference of the Birds, The Book of Divine, and Memorial of the Saints are among his best known works. Source: Wikipedia (en)