Further Reading: The Toolkit

Primary Texts

Plato — Meno and Theaetetus

Why read them: Both dialogues are masterclasses in the Socratic method as a philosophical tool. In the Meno, Socrates and Meno can't define virtue — and the struggle to define it produces one of the most important concepts in epistemology (Meno's paradox, the doctrine of recollection). In the Theaetetus, Socrates examines three attempts to define knowledge, and the demolition of each attempt is more instructive than any positive definition could be. Together, they show conceptual analysis at work at its most sophisticated. Start with: The Meno (shorter, more accessible). The famous "geometrical proof" passage in the middle is worth reading slowly — it is Socrates demonstrating a philosophical point by doing something rather than explaining it.

Aristotle — Prior Analytics, Book I, Chapters 1–4

Why read it: Aristotle invented formal logic, and these chapters are where he introduces the structure of deductive arguments. The writing is dry and technical compared to Plato's dialogues, but the core idea — that the validity of an argument is a matter of form, not content — is one of the most powerful ideas in intellectual history. Even a partial reading is worthwhile for understanding what "validity" actually means. Recommended edition: The Complete Works of Aristotle (Princeton) is the standard scholarly translation; for readability, try The Organon in the Hackett series.

Accessible Contemporary Works

T. Edward Damer — Attacking Faulty Reasoning: A Practical Guide to Fallacy-Free Arguments (7th edition, 2012)

Why read it: This is the best practical guide to argument evaluation available — clear, systematic, and full of real examples. Damer covers how to identify informal fallacies (ad hominem, straw man, slippery slope, appeal to authority) without reducing everything to a list of labeled tricks. The emphasis throughout is on understanding why a fallacy fails, not just recognizing its name. Ideal as a companion to this chapter.

Anthony Weston — A Rulebook for Arguments (5th edition, 2017)

Why read it: A remarkably short (under 100 pages), remarkably useful guide to constructing and evaluating arguments. Weston covers premise-conclusion structure, how to use examples effectively, the difference between deductive and inductive arguments, and how to write philosophical arguments well. Students of philosophy have been assigned this book for thirty years, and for good reason: it does exactly what it says it does.

Kieran Setiya — Midlife: A Philosophical Guide (2017)

Why read it: This is the book for the Marcus case study readers — a philosopher working through the real problems of midlife using the actual tools of philosophical argument. Setiya engages with questions about achievement, meaning, regret, and how to live in a life that is already substantially decided without resorting to either false comfort or unnecessary despair. The argument structure is clean enough to serve as a model for philosophical writing, and the topic is urgent enough to hold attention.

On Argument and Logic

Graham Priest — Logic: A Very Short Introduction (Oxford, 2000)

Why read it: Priest is one of the world's leading logicians and a clear, engaging writer. This short book covers deductive validity, inductive reasoning, and — unusually — some of the interesting edge cases where standard logic doesn't quite work (paradoxes, dialetheism, informal reasoning). Accessible to complete beginners while introducing ideas that professional logicians argue about.

Catarina Dutilh Novaes — The Dialogical Roots of Deduction (2021)

Why read it: A more ambitious and scholarly work arguing that formal logic is best understood as emerging from dialogical practices — specifically, the practice of arguing with an opponent and testing claims under challenge. This is directly relevant to this chapter's account of why philosophical tools work, and it gives the principle of charity a deeper foundation: arguments are not monologues but dialogues, and their norms come from the demands of genuine engagement with an interlocutor.

On Thought Experiments

David Edmonds — Would You Kill the Fat Man? The Trolley Problem and What Your Answer Tells Us About Right and Wrong (2013)

Why read it: A book-length treatment of the trolley problem and its philosophical implications, written for a general audience. Edmonds traces the problem's history, introduces the main variants, and explains what philosophers have concluded from it — and why they disagree. A good bridge between this chapter's brief introduction and the deeper treatment of moral theory in Part II.

Roy Sorensen — Thought Experiments (1992)

Why read it: The definitive philosophical analysis of what thought experiments are and why they work. Sorensen argues that thought experiments are a species of argument — not illustrations or rhetorical devices but genuine pieces of reasoning — and defends this against objections from philosophers who think them unreliable. More technical than the other recommendations, but worth it for readers who found themselves skeptical about the trolley problem.

On Conceptual Analysis

Sally Haslanger — Resisting Reality: Social Construction and Social Critique (2012)

Why read it: Haslanger is one of the most incisive contemporary philosophical writers on conceptual analysis, and she applies it to concepts that matter in everyday life: race, gender, knowledge, objectivity. She argues that conceptual analysis is not a neutral activity — what we decide a concept means has practical and political consequences — and that this makes it more important, not less. Challenging reading, but the first two essays are accessible and important.

Podcasts and Other Media

"Philosophize This!" — Episodes on Aristotle's Logic (Episodes 14–17 in the series): Stephen West's coverage of Aristotle's logic and epistemology is more accessible than any print introduction and gives useful context for understanding why the tools in this chapter come from a specific historical tradition.

"Very Bad Wizards" (podcast by David Pizarro and Tamler Sommers) — A philosopher and a psychologist discussing moral psychology, experiments, and arguments in a conversational format that models a lot of the toolkit in this chapter. They demonstrate both charity and rigorous disagreement in a way that's useful to observe.

"The Art of Changing Your Mind" — Any of the many interviews with Philip Tetlock on forecasting and epistemic humility are worth watching or reading. Tetlock's research on "superforecasters" is directly relevant to the question of what it means to hold beliefs with appropriate confidence and update them appropriately.