RELEVANCE LOGICS
A relevance logic is motivated by the idea that the premises of a valid argument must be somehow “relevant” to its conclusion. The idea is motivated by the fact that…
RATIONALISM
Rationalism designates a variety of philosophical schools maintaining that reason, as opposed to empirical investigation, is the most important method…
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INTUITIONISM
INTUITIONISM
One of the most familiar non-classical logics is intuitionism, which, in simple terms, is based upon the rejection of the law of excluded middle: (P ∨ ¬P). There are both…
PHILOSOPHY OF RELIGION
PHILOSOPHY OF RELIGION
Many religions distinguish between truths accessible through reason (natural theology), and truths accessible through faith (revealed theology). Both natural and revealed theology raise interesting philosophical questions about these two sources…
QUANTUM LOGIC
QUANTUM LOGIC
Most non-classical logics are motivated by either philosophical considerations, such as the metaphysical status of the future, or technical concerns about the neutrality of the logical connectives or the notion…
WRITING IS CENTRAL TO PHILOSOPHY
WRITING IS CENTRAL TO PHILOSOPHY
For the great majority of us, writing is instrumental to thinking. Since it is reasonable to describe philosophy as the application of disciplined thought to a variety of topics, issues,…
PHILOSOPHICAL BOOKS AND TEXT
PHILOSOPHICAL BOOKS AND TEXT
ESSENTIAL READING IN THE HISTORY OF PHILOSOPHY BOOKS TO GUIDE NOVICE PHILOSOPHY STUDENTS INTRODUCTORY PHILOSOPHY TEXTS GUIDES TO PHILOSOPHICAL WRITING INTRODUCTORY LOGIC TEXTS CRITICAL THINKING AND LOGIC TEXTBOOKS
THE PHILOSOPHICAL WRITING PROCESS
THE PHILOSOPHICAL WRITING PROCESS
Writing is work, and for many of us, writing is hard work. Writing philosophy adds to this labor an element of intimidation. Whether you are writing an expository—explanatory and descriptive—essay…
NON-WESTERN PHILOSOPHICAL TRADITIONS
NON-WESTERN PHILOSOPHICAL TRADITIONS
As explained at the beginning of this chapter, this book is intended primarily for philosophy students, especially new philosophy students, whose focus is mainly or even exclusively on Western philosophical…
THE PERSONAL ESSAY
THE PERSONAL ESSAY
The personal essay is a self-reflective search for meaning. Unlike most philosophical writing, it is not argumentative. Instead, it is exploratory and speculative, often even somewhat confessional. It is typically…
ATOMISM
ATOMISM
Atomism was founded by Leucippus (who flourished around 440 BC) but was primarily elaborated by Democritus (c. 460-370 BC) as a way of reconciling the Eleatic doctrine of the impossibility…
ORDINARY LANGUAGE PHILOSOPHY
ORDINARY LANGUAGE PHILOSOPHY
Between the 1940s and the 1960s, analytic philosophy shifted away from investigating the (supposed) underlying logical structure of language. While it was still primarily concerned with conceptual analysis, this was…
INTRODUCTORY LOGIC TEXTS
INTRODUCTORY LOGIC TEXTS
There are some fairly firm distinctions between critical thinking and formal (symbolic) logic texts. Whereas critical thinking focuses broadly on argumentation, formal logic is the study of the principles of…
THE SOPHISTS
THE SOPHISTS
The Sophists were not a single school but a professional grouping of largely itinerant teachers of rhetoric, philosophy, and legal argumentation. Their importance lies not in any specific doctrines but…
THE ELEATIC SCHOOL
THE ELEATIC SCHOOL
Based in the Ionian colony of Elea (modern-day Velia) in southern Italy, and primarily associated with Parmenides (early fifth century BC) and Melissus of Samos (mid fifth century BC), the…
WHAT IS GOOD PHILOSOPHICAL WRITING?
WHAT IS GOOD PHILOSOPHICAL WRITING?
Writing effectively for a philosophy course does not merely start with the general principles of good writing just outlined, it sets out to show mastery of these principles. It embodies…
ORDINARY LANGUAGE PHILOSOPHY
Between the 1940s and the 1960s, analytic philosophy shifted away from investigating the (supposed) underlying logical structure of language. While…
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Discipline Is Destiny: The Power of Self-Control (The Stoic Virtues Series)
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Stillness Is the Key
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Right Thing, Right Now: Justice in an Unjust World (The Stoic Virtues Series)
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How to Think Like a Roman Emperor: The Stoic Philosophy of Marcus Aurelius
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Letters from a Stoic: Penguin Classics
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Frege: Aufsätze zur Logik und Sprachphilosophie (Klassiker Auslegen) (German Edition)
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Love, Divine and Human: Contemporary Essays in Systematic and Philosophical Theology
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Encyclopedia of Environmental Ethics and Philosophy (2 volume set)
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On Human Nature
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The Atomos Blog
Natural Function and Perceptual Content
Natural Function and Perceptual Content
Natural Function and Perceptual Content
Natural Function and Perceptual Content
Philosophy of Law: An Introduction
Philosophy of Law: An Introduction
Philosophy of Science: An Introduction
Philosophy of Science: An Introduction
Aesthetics: An Introduction
Aesthetics: An Introduction
Epistemology: An Introduction
Epistemology: An Introduction
Ethics: An Introduction
Ethics: An Introduction
Logic: An Introduction
Logic: An Introduction
Metaphysics: An Introduction
Metaphysics: An Introduction
Philosophy of History: An Introduction
Philosophy of History: An Introduction
Philosophy of Language: An Introduction
Philosophy of Language: An Introduction
Philosophy of Mind: An Introduction
Philosophy of Mind: An Introduction
Philosophy of Technology: An Introduction
Philosophy of Technology: An Introduction
Political and Social Philosophy: An Introduction
Political and Social Philosophy: An Introduction
Environmental Philosophy: An Introduction
Environmental Philosophy: An Introduction
Existentialism and Phenomenology: An Introduction
Existentialism and Phenomenology: An Introduction
Philosophy of Language: An Introduction
Philosophy of Language: An Introduction
Terms & Concepts
Conjunction introduction
In symbolic logic, a valid inference in a system of truth-functional rules. In a derivation, two statements can be inferred using the conjunction symbol, since a statement governed by the…
Law of the Excluded Middle
The logical principle that a statement or its negation must be true: P V ¬ P. https://youtube.com/shorts/5UP2hrqeq40?feature=share
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