検索キーワード： 論理学・言語学

"Philosophy is not a theory," asserted Austro-British philosopher Ludwig Wittgenstein (1889-1951), "but an activity." In this 1921 opus, his only philosophical work published during his lifetime, Wittgenstein defined the object of philosophy as the logical clarification of thoughts and proposed the solution to most philosophic problems by means of a critical method of linguistic analysis.

In the 21st century, humanity is reaching new heights of scientific understanding - and, at the same time, appears to be losing its mind. How can a species that developed vaccines for COVID-19 in less than a year produce so much fake news, quack cures and conspiracy theorising? Pinker rejects the cynical cliché that humans are an irrational species. Instead, he explains that we think in ways that are sensible in the low-tech contexts in which we spend most of our lives, but fail to take advantage of the powerful tools of reasoning we have built up over the millennia.

Noam Chomsky is widely known and deeply admired for being the founder of modern linguistics, one of the founders of the field of cognitive science, and perhaps the most avidly read political theorist and commentator of our time. In these lectures, he presents a lifetime of philosophical reflection on all three of these areas of research to which he has contributed for over half a century.

In How Propaganda Works, Jason Stanley demonstrates that more attention needs to be paid. He examines how propaganda operates subtly, how it undermines democracy - particularly the ideals of democratic deliberation and equality - and how it has damaged democracies of the past.

The Thinking Toolbox has been the best selling text for teaching critical thinking skills and introduction to logic for over 15 years. This book is like a toolbox, full of different kinds of tools you can use for different thinking tasks. Just as you use the wrench in a regular tool box to fix the sink, so you can use the tools we give you in this book to solve thinking problems.

Philosophical Investigations was published in 1953, two years after the death of its author. In the preface written in Cambridge in 1945 where he was professor of philosophy he states: ‘Four years ago I had occasion to re-read my first book (the Tractatus Logico-Philosophicus) and to explain its ideas to someone. It suddenly seemed to me that I should publish those old thoughts and the new ones together: that the latter could be seen in the right light only by contrast with and against the background of my old way of thinking.’

Daniel Everett, then a Christian missionary, arrived among the Pirahã in 1977 - with his wife and three young children - intending to convert them. What he found was a language that defies all existing linguistic theories and reflects a way of life that evades contemporary understanding. The Pirahã have no counting system and no fixed terms for color. They have no concept of war or of personal property.

Mysticism and Logic. The first essay, which gives its title to the volume, endeavors to define the respective spheres of logic and mysticism. Bertrand Russell describes this and the four essays that follow as “entirely popular”.

Language is perhaps humanity’s most astonishing capacity - and one that remains poorly understood. In The Language Game, cognitive scientists Morten H. Christiansen and Nick Chater show us where generations of scientists seeking the rules of language got it wrong. Language isn’t about hardwired grammars but about near-total freedom, something like a game of charades, with the only requirement being a desire to understand and be understood.

The history of Western thought contains hundreds of statements by philosophers testifying to the use of esoteric writing in their own work or others'. Despite this well-documented history, however, esotericism is often dismissed today as a rare occurrence. But by ignoring esotericism, we risk cutting ourselves off from a full understanding of Western philosophical thought. Arthur M. Melzer serves as our guide in this engaging history of philosophical esotericism. Walking listeners through both an ancient and a modern esoteric work, he explains what esotericism is - and is not.

The front cover of the second edition of Language, Truth and Logic carried this statement in capital letters: ‘THE CLASSIC TEXT WHICH FOUNDED LOGICAL POSITIVISM - AND MODERN BRITISH PHILOSOPHY.’ It was a bold statement, but the book, first published in 1936 when A. J. Ayer was just 25 and a lecturer on philosophy at Christ Church, Oxford, drew unstinting praise from leading figures in the field, including Bertrand Russell.

Despite 21st-century fears of an "epidemic" of loneliness, its history has been sorely neglected. A Biography of Loneliness offers a radically new interpretation of loneliness as an emotional language and experience. Using letters and diaries, philosophical tracts, political discussions, and medical literature from the 18th century to the present, historian of the emotions Fay Bound Alberti argues that loneliness is not a historical, universal phenomenon. It is, in fact, a modern emotion: before 1800, its language did not exist.

Quantum physics is notable for its brazen defiance of common sense. (Think of Schrödinger's Cat, famously both dead and alive.) An especially rigorous form of quantum contradiction occurs in experiments with entangled particles. Our common assumption is that objects have properties whether or not anyone is observing them, and the measurement of one can't affect the other. Quantum entanglement rejects this assumption, offering impeccable reasoning and irrefutable evidence of the opposite. Is quantum entanglement mystical, or just mystifying?

David Whyte's Consolations use everyday words to present us with a prism through which to better understand ourselves and the lives we walk through. At the request of readers globally, Whyte returns with fifty-two short, elegant meditations on a single word ranging from 'Anxiety' to 'Body', 'Freedom', 'Shame' and 'Moon'. He embraces their nuances, amplitudes and depths, and, in doing so, confronts realities that many of us would spend a lifetime trying senselessly to avoid.

Your argument is valid and you know it; yet once again you find yourself leaving a debate feeling defeated and embarrassed. The matter is only made worse when you realize that your defeat came at the hands of someone's abuse of logic - and that with the right skills you could have won the argument. The ability to recognize logical fallacies when they occur is an essential life skill. Mastering Logical Fallacies is the clearest, boldest, and most systematic guide to dominating the rules and tactics of successful arguments.

For millennia, philosophers and scientists have been trying to unlock the secrets of the mind with only limited success—until now. Today, with modern technologies including the best in neuroscience, medical imaging, and recent advances in artificial intelligence, we are making more progress than ever before. In Introduction to Cognitive Science, Professor Thad A. Polk takes you on a fascinating tour of the latest discoveries in the relatively new field of cognitive science. In 24 exciting lectures, Professor Polk shares dozens of the most challenging questions in cognitive science today.

Dangerous Jokes develops a novel, well-researched, and compelling argument that lays bare the power of demeaning jokes in ordinary conversations. Claire Horisk draws on her expertise in philosophy of language and on evidence from sociology, law, and cognitive science to explain how the element of humor—so often used as a defense—makes jokes more potent than regular speech in communicating prejudice and reinforcing social hierarchies.

In an age of information overload, the real competitive edge is clarity. This guide distills the proven reasoning strategies that philosophers, data scientists, and world-class strategists rely on—then packages them into 100 bite-size methods that locks the idea in your memory.

Even the most reasonable of us can be selective about when we think reasonably—we might take pride in our rationality about professional matters but follow our gut when it comes to social issues, for example. In a world of rabbit holes, echo chambers, and disinformation, how can we keep our heads on straight more consistently? How to Think More and Better offers a philosopher's advice on becoming a more rational and critical thinker.

Truth before Logic explores the provocative implications of the claim that “you can only find truth with logic if you have already found truth without it.” Chesterton counters the sterile, truncated worldview of scientism with an appeal to a deep awareness in the heart and mind without which there would be neither science nor religion.