Availing ourselves of the previously introduced notion of a statementvariable, we can express Aristotle's point even more simply. We can say that, where the letter "P" stands for any statement whatever, the concept of truth is captured by the following schematic statement (we'll call it "Equivalence Schema" or "E" for short) of the necessary and sufficient conditions for a statement's being true: E: It is true that P iff P.2...