To exist is to be something, as distinguished from the nothing of non-existence, it is to be an entity of a specific nature made of specific attributes. Centuries ago, the man who was—no matter what his errors—the greatest of your philosophers, has stated the formula defining the concept of existence and the rule of all knowledge: A is A. A thing is itself. You have never grasped the meaning of his statement. I am here to complete it: Existence is Identity, Consciousness is Identification.
Whatever you choose to consider, be it an object, an attribute or an action, the law of identity remains the same. A leaf cannot be a stone at the same time, it cannot be all red and all green at the same time, it cannot freeze and burn at the same time. A is A. Or, if you wish it stated in simpler language: You cannot have your cake and eat it, too.
Are you seeking to know what is wrong with the world? All the disasters that have wrecked your world, came from your leaders’ attempt to evade the fact that A is A. All the secret evil you dread to face within you and all the pain you have ever endured, came from your own attempt to evade the fact that A is A. The purpose of those who taught you to evade it, was to make you forget that Man is Man.
A thing is—what it is; its characteristics constitute its identity. An existent apart from its characteristics, would be an existent apart from its identity, which means: a nothing, a non-existent.
No matter how eagerly you claim that the goal of your mystic wishing is a higher mode of life, the rebellion against identity is the wish for non-existence. The desire not to be anything is the desire not to be.
A characteristic is an aspect of an existent. It is not a disembodied, Platonic universal. Just as a concept cannot mean existents apart from their identity, so it cannot mean identities apart from that which exists. Existence is Identity.
The concept “identity” does not indicate the particular natures of the existents it subsumes; it merely underscores the primary fact that they are what they are.
The law of identity does not permit you to have your cake and eat it, too. The law of causality does not permit you to eat your cake before you have it. . . .
The law of causality is the law of identity applied to action. All actions are caused by entities. The nature of an action is caused and determined by the nature of the entities that act; a thing cannot act in contradiction to its nature.
The (implicit) concept “existent” undergoes three stages of development in man’s mind. The first stage is a child’s awareness of objects, of things—which represents the (implicit) concept “entity.” The second and closely allied stage is the awareness of specific, particular things which he can recognize and distinguish from the rest of his perceptual field—which represents the (implicit) concept “identity.”
They proclaim that there is no law of identity, that nothing exists but change, and blank out the fact that change presupposes the concepts of what changes, from what and to what, that without the law of identity no such concept as “change” is possible.