Omar Kheyam, who was one of the most distinguished of the poets of Persia, lived toward the close of the eleventh century. He was remarkable for the freedom of his religious opinions and the boldness with which he denounced hypocrisy and intolerance. He particularly directed his satire against the mystic poets. Nizami, the first of the romantic poets, flourished in the latter part of the twelfth century A.D. His principal works are called the "Five Treasures," of which the "Loves of Khosru and Shireen" is the most celebrated, and in the treatment of which he has succeeded beyond all other poets. Sadi (1194-1282) is esteemed among the Persians as a master in poetry and in morality. He is better known in Europe than any other Eastern author, except Hafiz, and has been more frequently translated. Jami calls him the nightingale of the groves of Shiraz, of which city he was a native. He spent a part of his long life in travel and in the acquisition of knowledge, and the remainder in retirement and devotion. His works are termed the salt-mine of poets, being revered as unrivaled models of the first genius in the world. His philosophy enabled him to support all the ills of life with patience and fortitude, and one of his remarks, arising from the destitute condition in which he once found himself, deserves preservation: "I never complained of my condition but once, when my feet were bare, and I had not money to buy shoes; but I met a man without feet, and I became contented with my lot." The works of Sadi are very numerous, and are popular and familiar everywhere in the East. His two greatest works are the "Bostan" and "Gulistan" (Bostan, the rose garden, and Gulistan, the fruit garden). They abound in striking beauties, and show great knowledge of human nature. Attar (1119-1233) was one of the great Sufi masters, and spent his life in devotion and contemplation. He died at the advanced age of 114. It would seem that poetry in the East was favorable to human life, so many of its professors attained to a great age, particularly those who professed the Sufi doctrine. The great work of Attar is a poem containing useful moral maxims. Roumi (1203-1272), usually called the Mulah, was an enthusiastic follower of the doctrine of the Sufis. His son succeeded him at the head of the sect, and surpassed his father not only in the virtues and attainments of the Sufis, but by his splendid poetical genius. His poems are regarded as the most perfect models of the mystic style. Sir William Jones says, "There is a depth and solemnity in his works unequaled by any poet of this class; even Hafiz must be considered inferior to him."