  As Moore came to see ten years later, this radical metaphysics of true propositions is too simple. But in the present context what is striking about it is the way in which by itself it hovers between idealism and realism. If propositions are thought of as contents of judgment, then to hold that reality just comprises true propositions is to take an idealist stance. What makes the position realist in Moore's hands is his uncompromising realism concerning propositions and concepts: although they are possible objects of thought, Moore writes, ‘that is no definition of them’; for ‘it is indifferent to their nature whether anybody thinks them or not’ (‘The Nature of Judgment’ 4)