“Unlike linear time, time conceived as cyclical cannot be readily abstracted from the spatial phenomena that exemplify it- from, for instance, the circular trajectories of the sun, the moon, and the stars. Unlike a straight line, moreover, a circle demarcates and encloses a spatial field. Indeed, the visible space in which we commonly find ourselves when we step outdoors is itself encompassed by the circular enigma that we have come to call 'the horizon.' The precise contour of the horizon varies considerably in different terrains, yet whenever we climb to a prominent vantage point, the circular character of the visible world becomes explicit. Thus cyclical time, the experiential time of an oral culture, has the same shape as perceivable space.”