   For Farabi, the individual intellect, even when perfected, can only come close to joining with the substance of the Agent Intellect. This reprises a theme sounded in Aristotle's metaphysics, in which the intellects of the heavenly spheres, desiring to be like the Intellect that is the Prime Mover, imitate it as best they can. For Farabi, a person's ultimate happiness is found in this approximation to the ideal.