To a large extent, Locke’s ontology follows the program of an empiricist nominalism but there are also some important Aristotelian influences on Locke’s thought. Locke holds that our concepts originate in the ideas we receive from sensation and reflection and that the organisation of our concepts in many ways documents the structure of our experience of the real world. But the world is composed of parts independently of the composition or decomposition reflected in our concepts.
1 Locke, J., (1975), An Essay concerning Human Understanding, ed. Peter H. Nidditch, Oxford: Oxford University Press, 1975 (reprinted with corrections 1979).
2 Newton, I. Philosophiae naturalis principia mathematica, Koyré, A.; I. Cohen, B.; Whitman, A. (eds.), Harvard University Press / Cambridge Mass: Cambridge University Press, 1972.