 The answer to this question given by a proponent of Russellian propositions is: objects, properties, relations, and functions. (The view is called “Russellianism” because of its resemblance to the view of content defended in Chapter IV of Russell 1903.) So described, Russellianism is a general view about what sorts of things the constituents of propositions are, and does not carry a commitment to any views about the contents of particular types of expressions. However, most Russellians also endorse a particular view about the contents of proper names which is known as Millianism: the view that the meaning of a simple proper name is the object (if any) for which it stands.