Reasoning

Correlation vs Causation: Why Association Is Not Proof

An introduction to the distinction between correlation and causation — why association does not establish cause, the errors that follow from confusing them, and how science tests causal claims.

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What Is Deductive Reasoning? Certainty Through Logic

An introduction to deductive reasoning — inference in which the conclusion follows necessarily from the premises — from Aristotle's syllogism to modern formal logic and its applications.

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What Is Inductive Reasoning? Probable Conclusions from Evidence

An introduction to inductive reasoning — inference from observed cases to general conclusions — from Aristotle's epagoge through Hume's problem of induction to Bayesian and statistical approaches.

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What Is Logic? The Systematic Study of Valid Reasoning

An introduction to logic as the systematic study of valid inference — what it is, where it came from, and why it matters for reasoning, science, and everyday judgment.

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Clarity: Meaning, Philosophy & Wisdom

A philosophical exploration of clarity as the lucid grasp of thought, reality, and self, tracing it through Descartes' rationalist method, Wittgenstein's logical analysis, and the broader epistemological demand for transparent understanding.

wisdom

Belief

A philosophical exploration of belief as a mental state of accepting something as true, from Plato's knowledge-as-justified-true-belief through Hume's psychology of belief to contemporary epistemology.

wisdom

Rationality

A philosophical exploration of rationality as the capacity for reason-based thought and action, from Greek logos through Kantian reason to contemporary debates about bounded rationality.

wisdom

Reason

A comparative philosophical exploration of reason as the distinctive human faculty through Greek philosophy, Stoic living, and Kantian critical examination.

wisdom

Decision Making

A philosophical exploration of decision making through Aristotle's practical judgment, Stoic rationality, existential choice, and the relationship between character, emotion, and action.

wisdom

Gottlob Frege: Philosophy, Quotes & Legacy

Explore Gottlob Frege's philosophy, from the Begriffsschrift and the sense-reference distinction to his logicist program and his founding influence on analytic philosophy, philosophy of language, and modern logic.

thinker

Charles Sanders Peirce: Philosophy, Quotes & Legacy

Explore Charles Sanders Peirce's philosophy of pragmatism, semiotics, and the pragmatic maxim. Discover the founder of American pragmatism and his theory of signs.

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John Dewey

A comprehensive introduction to John Dewey, the American philosopher who extended pragmatism into instrumentalism, transformed educational theory, and argued that democracy is a way of life grounded in shared inquiry.

thinker

Ludwig Wittgenstein

Austrian-British philosopher who transformed twentieth-century thought through his work on language, logic, and the limits of what can be said.

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David Hume

Scottish philosopher whose empiricist investigation of knowledge, causation, and morality reshaped modern philosophy and provoked Kant's critical turn.

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Immanuel Kant

German philosopher whose critical philosophy revolutionized epistemology, ethics, and aesthetics through systematic accounts of reason, experience, and moral duty.

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Aristotle

An evidence-led introduction to Aristotle, the fourth-century BCE Greek philosopher whose work shaped ethics, logic, metaphysics, and accounts of human flourishing.

thinker

Enquiry Concerning Human Understanding

An introduction to Hume's Enquiry Concerning Human Understanding, the classic empiricist text examining the origins of ideas, causation, induction, miracles, and the limits of human reason.

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Naming and Necessity

A philosophical guide to Saul Kripke's Naming and Necessity, examining rigid designation, proper names, natural kinds, and necessary a posteriori truths in language.

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Critique of Pure Reason

Immanuel Kant's 1781 investigation of the limits and conditions of human knowledge, establishing the critical philosophy that reshaped modern thought.

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Philosophy of Logic

An introduction to the philosophy of logic — the study of the nature, scope, and foundations of logical truth, logical consequence, and the very idea of a system of valid inference.

philosophy

Epistemology

An introduction to epistemology as the philosophical study of knowledge, examining justification, belief, truth, skepticism, and the limits of human understanding from Descartes through contemporary debates.

philosophy

Empiricism

An introduction to empiricism as the philosophical tradition that grounds knowledge in sensory experience, from Locke and Berkeley through Hume to logical positivism.

philosophy

Pragmatism

An introduction to pragmatism as the American philosophical tradition that evaluates ideas by their practical consequences, from Peirce through James and Dewey to Rorty.

philosophy

Rationalism

An introduction to rationalism as the philosophical tradition that privileges reason as the primary source of knowledge, from Descartes through Spinoza and Leibniz to Kant.

philosophy

Critical Thinking & Logic: A Learning Path Through Reasoning, Fallacies & Scientific Method

A structured learning path through critical thinking, logic, and scientific reasoning — from the laws of valid inference and common fallacies to the scientific method and the cognitive biases that undermine good judgment.

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