Review of the Work of Mr John Stuart Mill Entitled, 'Examination of Sir William Hamilton's Philosophy.'

In Short

This book provides a meticulous review of an examination of Sir William Hamilton’s philosophy, written by John Stuart Mill. The text functions as a high-level philosophical dialogue, contrasting Hamilton’s traditional, intuition-based metaphysics with Mill’s rigorous, associationist approach. By focusing on the tension between the "introspective" and "psychological" methods, the work evaluates the nature of human knowledge, the reality of the external world, and the limits of logic. Its enduring value lies in its demonstration of how to conduct a disciplined, evidence-based inquiry into the most abstract questions of existence.

The Story

The narrative arc of this critique follows the systematic dismantling of Sir William Hamilton’s philosophical system. The opening situates the reader within the intense atmosphere of mid-nineteenth-century British thought, where Hamilton reigned as an influential, if occasionally inconsistent, authority. The author establishes the stakes: philosophy had receded from public consciousness, and Hamilton had performed the vital service of bringing the history of thought back into view. However, the arrival of John Stuart Mill’s Examination forces a confrontation between this traditional erudition and a modern, scientific standard of psychological analysis.

The progression of the argument begins with the "Relativity of Human Knowledge," a doctrine that serves as the foundation of Hamilton’s influence. The book details how Mill breaks down the various, often vague, meanings of this doctrine, ultimately challenging Hamilton’s claim that we have no faculties capable of apprehending the Infinite or the Absolute. The argument shifts from these high abstractions to the nature of Consciousness itself. Here, the text highlights a fundamental disagreement in methodology: Hamilton relies on direct, introspective intuition, while Mill insists on a "psychological" method—an inquiry into the origin of our ideas.

As the analysis continues, it reaches the core of the disagreement regarding the external world and the nature of the mind. Mill argues that our belief in a permanent external world and a persistent "self" are not intuitive, but are rather the acquired products of the Law of Inseparable Association. He famously defines matter as a "permanent possibility of sensation," a stance that the author scrutinizes with both admiration and dissent.

The climax of the work occurs in the treatment of the conflict between human morality and theological dogma. Mill’s rejection of any "explanation" of suffering that requires a redefinition of goodness—a rejection often compared to the defiance of Prometheus—serves as the emotional and philosophical peak of the book. The closing stages of the review address Mill’s critique of Hamilton’s formal logic, specifically the "quantification of the predicate." While the author finds Mill’s logical reforms superior, they express a nuanced disagreement regarding the extent of Hamilton’s failings. The final assessment remains balanced, acknowledging that while Mill’s analytical microscope is unmatched in its ability to expose inconsistencies, the sheer historical weight and appetite for facts exhibited by Hamilton remain significant contributions to the intellectual record.

How It Unfolds

The stage is set The work begins by establishing the intellectual prominence of Sir William Hamilton and the necessity of subjecting his long-standing influence to the rigorous, modern scrutiny of John Stuart Mill.

The methodology of the mind The analysis moves to the foundational clash between the introspective method and the psychological method, detailing why one must trace the origin of ideas before declaring their nature.

The definition of reality The argument deepens as it explores Mill’s assertion that external objects are merely "permanent possibilities of sensation," a claim that redefines the relationship between the ego and the non-ego.

The moral confrontation The focus shifts to the conflict between human ethical standards and divine attributes, highlighting Mill’s famous refusal to worship a deity whose "goodness" contradicts human definitions of morality.

The logical revision The final movement evaluates Mill’s critique of the traditional syllogism, illustrating how he divests formal logic of its barren technicalities and grounds it in the broader scope of objective science.

The People

Sir William Hamilton acts as the towering, tradition-bound protagonist whose influence is both celebrated and challenged. He is portrayed as a figure of immense erudition, a collector of philosophical traditions whose work is nonetheless marked by self-contradiction and an impulsive, inconsistent approach to problem-solving. Standing in opposition is John Stuart Mill, the disciplined, empirical challenger. Mill represents the "psychological" school, bringing an analytical precision to the study of the mind that seeks to replace vague intuitions with verifiable laws of association. While Hamilton is characterized by his "appetite for speculation," Mill is defined by his "unrivalled microscope," a tool he uses to detect the minutest breaches in reasoning. A secondary, yet vital, figure is James Mill, John Stuart Mill’s father. He is introduced as an intellectual standard-bearer whose own works—such as the Analysis of the Phenomena of the Human Mind—provided the foundation for his son’s logical rigor, serving as an ideal of the "Platonic dialogue" in practice. Finally, the author of this review acts as a moderator, a scholar who navigates between these two titans, occasionally siding with the empirical clarity of Mill while defending the historical value and sincerity of Hamilton.

In Its Own Voice

Regarding the difficulty of understanding the mind through direct, unanalyzed observation:

"For we have it not in our power to ascertain, by any direct process, what Consciousness told us at the time when its revelations were in their pristine purity."

Regarding the necessity of subjecting all beliefs, even those concerning the divine, to human moral scrutiny:

"I will call no being good, who is not what I mean when I apply that epithet to my fellow-creatures; and if such a being can sentence me to hell for not so calling him, to hell I will go."

Regarding the progress of human knowledge through the refutation of supposed "necessary" truths:

"The History of Science teems with inconceivabilities which have been conquered; and with supposed necessary truths, which have first ceased to be thought necessary, then to be thought true, and have finally come to be deemed impossible."

What It's Really About

At its core, this work is about the shifting standards of truth in the modern age. It interrogates whether philosophy should rely on the inherited, introspective assumptions of the past or be reconstructed through the empirical study of how the mind actually forms beliefs. It touches on the "libertus philosophandi"—the liberty to philosophize—and asks if we truly possess the freedom to question dogmas that are shielded by social or religious taboo. The book challenges the reader to consider whether our most basic perceptions of "matter" and "self" are realities or merely the sophisticated, accumulated habits of the human nervous system. It is, fundamentally, an inquiry into the limits of human understanding and the moral courage required to accept the results of that inquiry.

Why Read It Today

Readers who enjoy intellectual history or have an interest in the development of analytical philosophy will find this book deeply rewarding. It offers a masterclass in critical engagement, showing how to balance respect for a predecessor’s contributions with a ruthless, evidence-based critique of their errors. Reading it feels like sitting in on a high-stakes debate between two of the nineteenth century’s greatest minds, moderated by a scholar who is equally comfortable citing ancient Greek tragedy as they are discussing the laws of formal logic.

However, the book is not for the casual reader. It demands "a full stretch of attention," as the text itself warns, and assumes a reader already familiar with the technical vocabulary of metaphysics—terms like "noumenon," "syllogism," and "quantification of the predicate" appear without concession. One must be prepared for the dense, period-specific prose and the Victorian expectation that the reader will be well-versed in classical references and the history of continental philosophy. For those willing to navigate these challenges, the book leaves behind a lingering sense of clarity—a realization that the most persistent philosophical problems are not solved by intuition, but by the slow, painful process of verifying the origins of our own thoughts.