 Thus far, we have not found explicit endorsement of items 3 and 6. These items are found most clearly in Hume’s Treatise of Human Nature (1739–40). He there says that “every impression”, including both internal and external, and hence including sense impressions, “appear, all of them, in their true colours, as impressions or perceptions” (Treatise, I.4.2.7; again, Chisholm’s epistemic “appear”). But, further,