Abstract

The problem is that of how to relate reality to the categories of dyadic ontology. We shall understand by "reality" the immediate object of that which is true. We shall understand by "dyadic ontology" one which assumes a pair of ontological categories as the real. The categories chosen will be those of a class of constants characterized by persistence and a class of variables characterized by change. As one philosophical tradition succeeds another in history, the names will be altered. Again, sometimes the class will be specified and sometimes its elements. The relation between reality and the categories can take any one of the following forms. Persistence is alone real, change is alone real, they are equally real, neither is real. The first will be called idealism, the second nominalism and the third realism. The fourth has no historic tradition in the West.