30-Second Philosophies: The 50 Most Thought-Provoking Philosophies, Each Explained in Half a Minute

Jul 6, 2026

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A concise philosophy reference presenting 50 influential ideas, each clarified in about half a minute. Covering language and logic, science and epistemology, mind and metaphysics, ethics and political philosophy, and religion, it pairs famous arguments and puzzles with quick explanations. Front matter frames philosophy as engagement with “big questions” about morality, knowledge, existence, and reality, contrasting philosophical reasoning with religious approaches. Includes foreword, introduction guidance, glossary entries, and contributor information.

LanguageEnglish

CategoryLiterature

FormatPDF

Pages183

Reading Time4 h 42 min

Foreword

Introduction

How to become a philosopher

Language & Logic

Science & Epistemology

Mind & Metaphysics

Ethics & Political Philosophy

Religion

Grand Moments

Notes on contributors

Resources

Acknowledgments

30-SECOND PHILOSOPHIES The 50 most thought-provoking philosophies, each explained in half a minute Consultant Editor Barry Loewer Foreword Stephen Law Contributors Julian Baggini Kati Balog James Garvey Barry Loewer Jeremy Stangroom Published in the UK in 2010 by Icon Books Ltd Omnibus Business Centre 39–41 North Road, London N7 9DP email: [info@iconbooks.co.uk](info@iconbooks.co.uk) [www.iconbooks.co.uk](www.iconbooks.co.uk) © 2009 by Ivy Press Limited The editor and contributors have asserted their moral rights. No part of this book may be reproduced in any form, or by any means, without prior permission in writing from the publisher. This book was conceived, designed, and produced by Ivy Press 210 High Street, Lewes, East Sussex BN7 2NS, UK [www.ivypress.co.uk](www.ivypress.co.uk) Creative Director Peter Bridgewater Publisher Jason Hook Editorial Director Caroline Earle Art Director Michael Whitehead Commissioning Editor Nic Compton Designers James Hollywell, Les Hunt Concept Design Linda Becker Illustrations Ivan Hissey Glossaries Text James Garvey Picture Research Lynda Marshall Digital Assistant Emily Owen Digital ISBN: 978-1-848314-50-4 CONTENTS Foreword Introduction How to become a philosopher Language & Logic GLOSSARY Aristotle ’s syllogisms Russell ’s paradox & Frege ’s logicism profile: Aristotle Russell ’s theory of description Frege ’s puzzle Gödel ’s theorem Epimenides ’ liar paradox Eubulides ’ heap Science & Epistemology GLOSSARY I think therefore I am Gettier ’s counter example profile: Karl Popper The brain in a vat Hume ’s problem of induction Goodman’s gruesome riddle Popper ’s conjectures & refutations Kuhn’s scientific revolutions Mind & Metaphysics GLOSSARY Descartes mind-body problem Brentano’s intentionality Fodor ’s language of thought Parfit ’s persons profile: René Descartes Chalmer ’s zombies Zeno’s paradoxes Kant ’s left hand Theseus ’ ship Laplace ’s demon, determinism, & free will Ryle ’s ghost in the machine Ethics & Political Philosophy GLOSSARY Aristotle ’s ethics States of nature and the social contract Kant ’s categorical imperative profile: Immanuel Kant Mill ’s utilitarianism Marx’s historical materialism The trolley problem Religion GLOSSARY Aquinas ’ five ways Anselm ’s ontological argument profile: Thomas Aquinas Epicurus ’ riddle Paley’s watchmaker Pascal ’s wager Hume against miracles Grand Moments GLOSSARY Socrates ’ method Plato’s cave Aristotle ’s four causes Lucretius ’ atomism profile: Ludwig Wittgenstein Berkeley’s idealism Kant ’s synthetic a priori Hegel ’s dialectic James ’ pragmatism Moore ’s common sense Wittgenstein’s picture theory of language Continental philosophy GLOSSARY Nietzsche ’s Superman profile: Friedrich Nietzsche Derrida ’s deconstruction Heidegger ’s nothing Sartre ’s bad faith Notes on contributors Resources Acknowledgments FOREWORD Stephen Law Philosophy addresses what are sometimes called the “big questions.”These include questions about morality (“What makes things morally right or wrong?”) ; about what we can know, if anything (“Can you know that the world around you is real, and not a computer-generated virtual reality?”) ; about the nature of human existence (“Are you your brain? Do we possess souls?”) ; and about the nature of reality (“Why is there anything at all?”) . Religion addresses many of the same questions, but while philosophy and religion overlap in the questions they address, they can differ in the approach they take to answering them. While faith and revelation are typically the cornerstones of religious belief, philosophy places great emphasis on reason—on applying our intelligence in order to figure out, as best we can, what the answers are. Socrates is supposed to have said,“The unexamined life is not worth living.” That ’s a strong claim—too strong, I think. Suppose someon

FAQs

What is the purpose of the book’s “big questions”?

The foreword explains that philosophy addresses major questions about morality, what can be known, human existence, and why anything exists at all.

How does philosophy differ from religion in answering shared questions?

Religion typically relies on faith and revelation, while philosophy emphasizes reason and rational reflection to work out answers as best as possible.

Why does the foreword argue that philosophical reflection can be valuable beyond personal beliefs?

It highlights skills philosophy builds, such as spotting logical fallacies and making precise arguments, and notes broader benefits like stronger critical defenses against misleading claims.

Jul 6, 2026

Upload by Logic