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Formal Logic - Augustus De Morgan

Formal Logic

By: Augustus De Morgan

Paperback | 16 February 2026

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"Formal Logic (1847)" is a seminal contribution to the fields of mathematics and philosophy by the influential British mathematician Augustus De Morgan. This rigorous investigation represents a pivotal moment in the evolution of logical thought, as De Morgan seeks to expand the traditional Aristotelian syllogism through mathematical precision. The work introduces the concept of the quantification of the predicate and explores the complexities of propositional logic, laying the groundwork for what would eventually become modern symbolic logic.

De Morgan's approach bridges the gap between linguistic reasoning and mathematical calculation, providing a systematic framework for analyzing the structure of valid arguments. He delves into topics such as identity, relation, and the logic of probabilities, challenging contemporary scholars to view logic as a dynamic branch of mathematical inquiry rather than a static philosophical exercise. As a foundational text in the history of ideas, "Formal Logic (1847)" remains essential reading for students of mathematical logic, the philosophy of science, and the history of mathematics, offering deep insights into the mechanical processes of human reasoning.

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