Correlates of The Law of Identity

The Principle of Excluded Middle, along with its complement, the Law of Contradiction, are correlates of the Law of Identity; the first principle of thought (reason). Because the principle of identity intellectually partitions the Universe into exactly two parts: ‘self’ and ‘other, it creates a dichotomy wherein the two parts are ‘mutually exclusive’ and ‘jointly exhaustive’. The principle of contradiction is merely an expression of the mutually exclusive aspect of that dichotomy, and the principle of excluded middle is an expression of its jointly exhaustive aspect.