is taken from  Ras Tafari , the  pre-regnal  title of Haile Selassie I, composed of  Amharic   Ras  (literally "Head," an Ethiopian title equivalent to  Duke ), and Haile Selassie's pre-regnal given name, Tafari. Rastafari are generally distinguished for asserting the doctrine that Haile Selassie I, the former, and final,  Emperor