- the universes, then, are three in number: the universe created by one viewpoint, the universe created by every other viewpoint, the universe created by the mutual actions of viewpoints which is agreed to be upheld—the physical universe. (COHA, p. 185)
- the first of these is one's own universe. The second universe would be the material universe, which is the universe of matter, energy, space and time, which is the common meeting ground of all of us. The third universe is actually a class of universes, which could be called "the other fellow's universe," for he and all the class of "other fellows" have universes of their own. (COHA, p. 188)