Charles Sanders Peirce sets out to reform the foundation of scientific inquiry and metaphysics by challenging the traditional assumption of absolute laws. He argues that human thought originates from the irritation of doubt and comes to rest only in the establishment of belief, which acts essentially as a habit of action. Rejecting both absolute determinism and pure nominalism, Peirce proposes that regularities in nature are not absolute from the beginning, but have evolved over time from a primordial chaos of chance through a universal tendency of things to take habits.
The early essays investigate the fixation of belief and how methods of tenacity, authority, and a priori reasoning fail because they rely on capricious preferences rather than external permanency. The scientific method alone aligns our thoughts with objective reality, defined not by what any individual thinks, but by the final opinion upon which all investigators are destined ultimately to agree. Peirce then applies this pragmatic principle to clarify concepts such as weight, force, and reality, demonstrating that the meaning of any concept consists entirely in its conceivable practical consequences.
In the central essays, Peirce develops a quantitative treatment of logic through the calculus of probabilities. He reframes probability as relative frequency in the long run and argues that valid reasoning requires an altruistic identification of one's interests with an unlimited community of inquirers. He demonstrates that synthetic reasoning, or induction, cannot be reduced to deductive certainty, but derives its trustworthiness from the self-correcting nature of continuous empirical sampling.
The later philosophical essays extend these logical principles into a grand cosmogonic theory of objective idealism. Peirce contends that physical laws are merely inveterate habits of matter, which is itself described as effete mind. By uniting the rigorous methods of exact science with the medieval recognition of the reality of universals, he outlines a universe growing from pure unpersonalized feeling toward an increasingly rational and symmetrical system, where mind and law are perpetually shaped by the interplay of chance, continuity, and love.
