 [W]hen I see the leaf change in colour—perhaps as it turned brown by a flame—I seem to see something cease to exist in the location of the leaf, namely, its greenness. But it could not be the universal greenness which ceases to exist, at least so long as other green things continue to exist. My opponent must say that really what I see is not something ceasing to exist, but merely the leaf’s ceasing to instantiate greenness, or greenness ceasing to be ‘wholly present’ just here. I can only say that that suggestion strikes me as being quite false to the phenomenology of perception. The objects of perception seem, one and all, to be particulars—and, indeed, a causal theory of perception (which I myself favour) would appear to require this, since particulars alone seem capable of entering into causal relations.