Notwithstanding irreconcilable parties--‘Alids, Persian extremists, and (we may add) Khárijites--the policy of _rapprochement_ was on the whole extraordinarily effective. In carrying it out the Caliphs received powerful assistance from a noble and ancient Persian family, the celebrated Barmakites or Barmecides. According to Mas‘údí,[487] Barmak was originally a title borne by the High Priest (_sádin_) of the great Magian fire-temple at Balkh. Khálid, the son of one of these dignitaries--whence he and his descendants were called Barmakites (_Barámika_)--held the most important offices of state under Saffáḥ and Manṣúr. Yaḥyá, the son of Khálid, was entrusted with the education of Hárún al-Rashíd, and on the accession of the young prince he was appointed Grand Vizier. "My dear father!" said the Caliph, "it is through the blessings and the good fortune which attend you, and through your excellent management, that I am seated on the throne;[488] so I commit to you the direction of affairs." He then handed to him his signet-ring. Yaḥyá was distinguished (says the biographer) for wisdom, nobleness of mind, and elegance of language.[489] Although he took a truly Persian delight in philosophical discussion, for which purpose freethinking scholars and eminent heretics used often to meet in his house, he was careful to observe the outward forms of piety. It may be said of the ‘Abbásids generally that, whatever they might do or think in private, they wore the official badge of Islam ostentatiously on their sleeves. The following verses which Yaḥyá addressed to his son Faḍl are very characteristic:--[490] "Seek glory while 'tis day, no effort spare, And patiently the loved one's absence bear; But when the shades of night advancing slow O'er every vice a veil of darkness throw, Beguile the hours with all thy heart's delight: The day of prudent men begins at night. Many there be, esteemed of life austere, Who nightly enter on a strange career. Night o'er them keeps her sable curtain drawn, And merrily they pass from eve to dawn. Who but a fool his pleasures would expose To spying rivals and censorious foes?" [Sidenote: Fall of the Barmecides (803 A.D.).]