The Partially Examined Life (Citizens): (Protected Content)
On Inquiry into the Human Mind on the Principles of Common Sense (1764): the introduction, conclusion, ch. 2 “Of Smelling” ch. 4 “Of Hearing,” and some correspondence between Reid and Hume.
According to Reid, the big mistake of “modern” philosophy is thinking that objects in the world need to resemble the sensations we have of them. Smelling is supposed to give us an obvious counter-example: the scent of a rose in no way resembles a physical rose.