But now one can do something else still. One can say: “Certainly I believe in the world that is spread out around me, but I do not maintain any right to claim that this world is the real one. I can say of it only that it ‘appears’ to me. I have no right to say more about it.‿ There you have again a difference. One can say of the world that is spread out around us. “This is the real world,‿ but one can also say, “I am clear that there is a world which appears to me; I cannot speak of anything more. I am not saying that this world of colors and sounds, which arises only because certain processes in my eyes present themselves to me as colors, while processes in my ears present themselves to me as sounds—I am not saying that this world is the true world. It is a world of phenomena.‿ This is the outlook called Phenomenalism.