This volume investigates the intersection of metaphysical inquiry, mathematical logic, and the philosophy of language to clarify the nature of existence and semantic designation. Nathan U. Salmon, a prominent philosopher of language and metaphysics, compiles his influential research to address complex problems regarding identity, modality, and the ontological status of numbers. The text utilizes rigorous logical analysis and formal semantics to evaluate how linguistic expressions refer to objects, both real and fictional, within various modal frameworks.

Experts recognize this collection as a significant contribution to analytic philosophy, particularly for its precise treatment of reference and designation. Readers frequently note the technical density of the prose, which is intended for advanced students and professional philosophers familiar with formal logic.