Chris Daly; Tropes, Proceedings of the Aristotelian Society, Volume 94, Issue 1, 1 June 1994, Pages 253–262, https://doi.org/10.1093/aristotelian/94.1.253.

Metaphysics is the thoroughly empirical science. Every item of experience must be evidence for or against any hypothesis of speculative cosmology, and every experienced object must be an exemplar and test case for the categories of analytic ontology. Technically, therefore, one example ought for our present theme to be as good as another. The more dignified examples, however, are darkened with a patina of tradition and partisanship, while some frivolous ones are peculiarly perspicuous. Let us therefore imagine three lollipops, made (...) by a candy man who buys sticks from a big supplier and molds candy knobs on them. Lollipop No. 1 has a red round peppermint head, No. 2 a brown round chocolate head, No. 3 a red square peppermint head. The circumstance here which mainly provokes theories of subsistence and inherence is similarity with difference: each lollipop is partially similar to each other and partially different from it. If we can give a good account of this circumstance in this affair we shall have the instrument to expose the anatomy of everything, from an electron or an apple to archangels and the World All. (shrink)

Chris Daly; Tropes, Proceedings of the Aristotelian Society, Volume 94, Issue 1, 1 June 1994, Pages 253–262, https://doi.org/10.1093/aristotelian/94.1.253.