ABSTRACT
In the Metaphysics Aristotle says that Being has at least as many senses as there are categories. Apparently Plato would not have agreed with this. For in the Sophist Plato stresses that a single form of existence blends with things at Rest and things in Motion. For Plato, justice, as something at rest, and chairs, as something in motion. Heterotypical predication is sometimes univocal and sometimes equivocal. On Strawson's view, it is essential to persons that they sustain significantly such P-predicates as thinks and such M-predicates as weighs a hundred pounds. This doctrine, like Ryle's, is calculated to eliminate the ghost in the machine. There is a critical technique that is much older than Kant's, it legislates for metaphysics from the theory of assertion, not from the theory of knowledge. Plato's Parmenides, Aristotle's Analytics, and parts of his Metaphysics are the representatives of a critique which uses philosophical logic, not epistemology, to correct metaphysics and to set its bounds.
