1. Cf. Aristotle, Metaphysics, Book Θ: Clarendon Aristotle Series, trans. & comm. S. Makin, ed. L. Judson (Oxford: Clarendon, 2006), 1046a–1048a
2. Aristotle, Nicomachean Ethics, trans. and ed. S. Broadie and C. Rowe (Oxford: Oxford University Press, 2002), 1113a7–8.
3. Cf. J. Locke, An Essay Concerning Human Understanding, ed. P. Nidditch (Oxford: Oxford University Press, 1979)
4. D. Hume, Enquiry Concerning Human Understanding (The Clarendon Edition of the Works of David Hume), ed. T. Beauchamp (Oxford: Oxford University Press, 2006)
5. E. J. Lowe, Routledge Philosophy Guide to Locke on Human Understanding (London: Routledge, 1995)