This article explores two contrasting accounts of the exposure of Cyrus the Elder: the lengthy version in Herodotus, replete with characteristics of the infancy of royal mythological heroes, and that in Isocrates’ Philippus, in which the ekthesis implies illegitimacy and inferiority, as part of Isocrates’ political agenda. Cyrus’ alleged exposure is an ideal case study for the ambivalence of infant exposure in classical Greek discourse, either to signify heroicity in an individual destined for greatness and the founding of a dynasty (as in Herodotus), or to allude to illegitimacy and so exclude the individual from civil society (as in Isocrates).