 Let’s consider an example to better appreciate Russell’s views about our thoughts about external reality. Suppose that you are sitting before an object and say to yourself, “That apple is green.” You are acquainted, Russell thinks, with the universal GREEN. But you are not acquainted with the apple itself, as misidentification is possible. Your thought about the apple is therefore by thought by description. But the description is not, for Russell, purely qualitative. Indeed, the description is individual-involving. In virtue of your visual experience of the apple, you are acquainted with a sense-datum caused by the apple. Call this sense-datum BILL; Russell would use the demonstrative ‘that’, pointing inward at your occurrent sense-datum. The content of your thought about the apple, according to Russell, is then something like the following.