Sulzer’s mature aesthetics is firmly grounded in his generally Leibnizo-Wolffian metaphysics and psychology as well as in his Wolffian moral philosophy. The central tenets of his metaphysics and psychology are that the human mind is essentially representational, so that desire and will as well as cognition are forms of representation, and that the ultimate source of all of our pleasurable sentiments is the unhindered activity of our capacity for representation. Conversely, the fundamental source