This paper discusses why the head (orí) is the most prominent part of Yoruba sculpture. An analysis of Yoruba ontology of the person reveals that the Yoruba regard the head as the locus of the àse (divine power) of the Supreme Being (Olódùmarè) in the individual, constituting the person's life-source and controlling personality and destiny. Three different modes of representing the head are identified in Yoruba sculpture: the naturalistic, which refers to the external, or physical, head (orí òde); the stylized, which hints at the inner, or spiritual, head (orí inú); and the abstract, which symbolizes the primeval material (òkè ìpòrí) of which the inner head was made. Although the fate of each individual is believed to have been predetermined in heaven before birth "into" the earth, a good or bad destiny is no more than a potentiality for success or falure; a successful life depends on how well one makes use of one's head here on earth. The prominence given to the head in Yoruba sculpture is thus a reflection of its sociobiological importance as the coordinating center of human existential struggles.