The Book of Government or Rules for Kings - The Siyar al Muluk or Siyasat-nama of Nizam al-Mulk

A translation of a classic 11th-century Persian text on behaviour and conduct in government, written between 1086 and 1091 by Nizam al-Mulk, who for over 30 years was Chief Minister of two successive rulers of the Seljuk, who had created an Empire