PANTHEON
ExploreBuild My Library
© 2026 Pantheon — an atlas of the ideas that shaped how we think.
person1909-1988

Max Black

Disciplines:
logic
philosophy/philosophy of language
metaphysics

Summary

British-American analytic philosopher who contributed to the philosophy of language, logic, and metaphysics — famous for the thought experiment against Leibniz's principle of the identity of indiscernibles.

Core Contribution

The Identity of Indiscernibles thought experiment: two qualitatively identical iron spheres in an otherwise empty universe — Leibniz's principle says they must be identical, but they are two distinct objects. This generates a deep puzzle about individuation. Models and Metaphors: a study of analogical and metaphorical reasoning in science.

Key Spikes & Highlights

  • The two-spheres thought experiment from 'The Identity of Indiscernibles' (1952) is the canonical challenge to Leibniz's PII — it forces a choice between admitting primitive thisness (haecceitism) or denying that the situation is genuinely possible.

Notable Works & Achievements

The Nature of Mathematics

Language and Philosophy

Models and Metaphors

Historical Influences

Ludwig Wittgenstein Gottlob Frege

Intellectual Lineage

Analytic Philosophy

Contemporaries & Peers

Nelson Goodman W.V.O. Quine

Minds Influenced

No recorded minds influenced.

Intellectual Posterity

Identity of Indiscernibles

Discussing

Max Black

Ask anything about Max Black — their ideas, influences, contradictions, legacy.

Sign in to start a conversation.