Kripke's *Reference and Existence* presents the central thesis that names rigidly designate their referents across all possible worlds. This contrasts with traditional descriptivist theories, which hold that the meaning of a name is equivalent to a description. Kripke argues that the connection between a name and its object is established through a causal chain of naming, initiated by a speaker who associates the name with the object, and that this association is passed down through subsequent uses of the name.

The book defends this causal theory of reference against challenges and explores its implications for modality, identity, and the nature of existence. Readers will understand why a name's reference is fixed independently of specific descriptions and how this impacts our understanding of necessary truths and counterfactual possibilities.

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Key concepts

Rigid Designation — A term that refers to the same object in all possible worlds.
Causal Theory of Reference — The theory that the reference of a name is fixed by a causal chain connecting the speaker to the referent.
Necessity — A proposition that is true in all possible worlds.
Possible Worlds Semantics — A framework for analyzing modal claims by considering alternative states of affairs.