In the tradition of esoteric Islam, the philosophies of the Ismailis warrant particular attention, and among the Ismailis, the figure of Nasir Khusraw calls for even more particular study. Born into a well-placed, highly educated family in Khurasan in 1004 CE, Nasir Khusraw, along with at least two brothers, rose to prominence in the Ghaznavid and Saljuq courts, as a leading financial administrator. Evidence of his high level of education and training can be found in his writings, of which an unusual variety remains in existence; we possess not only a number of prose philosophical and religious treatises, and a much-quoted collection of highly spiritual and philosophical poetry, but also a unique prose travelogue of an important seven-year journey he undertook throughout Islamic lands from 1045 to 1052.