LogicPREDICATE CALCULUS (PREDICATE LOGIC)
November 15, 2023

PREDICATE CALCULUS (PREDICATE LOGIC)

The next development of the propositional calculus is the predicate calculus. This considers the logical relationships that hold between predicate expressions, along with the quantifiers ∃x (“there is at least…
PHILOSOPHICAL BOOKS AND TEXTINTRODUCTORY LOGIC TEXTS
November 27, 2023

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…
Writing PhilosophyHOW DO YOU DO PHILOSOPHY?
November 24, 2023

HOW DO YOU DO PHILOSOPHY?

How do you do philosophy? Unlike many of the questions asked in the name of philosophy, this one has a straightforward answer. You do philosophy primarily through writing. Now, if…
Philosophy BranchesTraditional Branches of PhilosophyNATURAL PHILOSOPHY
December 12, 2023

NATURAL PHILOSOPHY

An important historical branch designation rather than a current one, natural philosophy was the study of nature and the physical universe by philosophical (that is, largely empirical reason-based) methods.
History Of PhilosophyCLASSICAL PHILOSOPHYARISTOTLE
November 15, 2023

ARISTOTLE

Aristotle (384–322 BC) was born in Stagira but moved to Athens as a young man to study at Plato’s Academy. Following Plato’s death, Aristotle traveled, became tutor to Alexander the…
LogicQUANTUM LOGIC
November 15, 2023

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…
WHAT IS PHILOSOPHY?WHAT IS PHILOSOPHY?
November 12, 2023

WHAT IS PHILOSOPHY?

MEDIEVAL PHILOSOPHYHistory Of PhilosophySCHOLASTICISM
November 15, 2023

SCHOLASTICISM

A general term for those philosophers influenced by the medieval rediscovery of classic texts, Scholasticism is broadly characterized by an interest in logic and disputation and is motivated to resolve…
History Of PhilosophyPOST-KANTIAN PHILOSOPHY IN THE NINETEENTH CENTURY
November 15, 2023

POST-KANTIAN PHILOSOPHY IN THE NINETEENTH CENTURY

Kant’s philosophy continued to dominate throughout the nineteenth century, although there were increasing concerns about the overall coherence of his system; in particular, there was doubt as to whether the…
CONTINENTAL PHILOSOPHYHistory Of PhilosophySTRUCTURALISM
November 15, 2023

STRUCTURALISM

Structuralism refers to research undertaken in the social sciences, predominantly in France, between the 1950s and 1970s, which sought to understand various social phenomena as a “closed system” of elements.
Writing PhilosophyGOOD PHILOSOPHICAL WRITING
November 23, 2023

GOOD PHILOSOPHICAL WRITING

BASICS OF GOOD PHILOSOPHICAL WRITING: A DEEPER DIVE Having surveyed the elements of good writing from 30,000 feet, let’s swoop in on some of the most important specifics. This means…
Writing PhilosophyWHAT IS GOOD PHILOSOPHICAL WRITING?
November 24, 2023

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…
CLASSICAL PHILOSOPHYHistory Of PhilosophyCYNICISM
November 15, 2023

CYNICISM

Founded by Antisthenes (c. 445–360 BC), who taught the importance of individual virtue over material luxury, Cynicism was contemptuous of political institutions and organized religion. It rejected refined philosophical speculation…
History Of PhilosophyPYTHAGOREANISM
November 15, 2023

PYTHAGOREANISM

Based on the teachings of Pythagoras (c. 570–495 BC) and the school he established inCroton in southern Italy, we may conclude that, in many ways, Pythagoreanism was more ofa mystery…
LogicINTUITIONISM
November 15, 2023

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…

Books

  • Mad Mothers, Bad Mothers, and What a “Good” Mother Would Do: The Ethics of Ambivalence

    $32.00
  • Art as Experience

    $14.58
  • The Heart of the Buddha’s Teaching: Transforming Suffering into Peace, Joy, and Liberation

    $12.19
  • Reflections on the Revolution in France: [Original Version]

    $6.12
  • The Essential Writings of Ralph Waldo Emerson (Modern Library Classics)

    $15.99
  • Bhagavad Gita: A New Translation

    $12.39
  • Idolatry: A Contemporary Jewish Conversation (Jewish Thought, Jewish History)

    $25.00
  • Leibowitz and Levinas: Between Judaism and Universalism

    $82.15
  • Basic Writings of Nietzsche

    $18.59
  • God Is Bigger Than the Bible

    $13.39
  • Montaigne: Selected Essays: with La Boétie’s Discourse on Voluntary Servitude (Hackett Classics)

    $14.00
  • Start Where You Are: A Guide to Compassionate Living

    $34.93
  • De Umbris Idearum: On the Shadows of Ideas (Collected Works of Giordano Bruno)

    $16.00
  • Monolingualism of the Other: or, The Prosthesis of Origin (Cultural Memory in the Present)

    $18.29
  • Tao Te Ching

    $3.95
  • Courage Is Calling: Fortune Favors the Brave (The Stoic Virtues Series)

    $14.29
Reexamining Spacetime Substantivalism: Duplicate

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Rule-Following and Artificial Intelligence: A Kripkean PerspectiveAtomos

Rule-Following and Artificial Intelligence: A Kripkean Perspective

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The Eternal Coexistence of Consciousness and Spacetime: A Philosophical InquiryAtomos

The Eternal Coexistence of Consciousness and Spacetime: A Philosophical Inquiry

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Embracing Contradiction: An In-Depth Analysis of DialetheismAtomos

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Analysis of, and Responses to Edmund Gettier’s “Is Justified True Belief Knowledge?”Atomos

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Philosophy StudentPhilosophy StudentDecember 8, 2025
The Unstable Foundation: A Critique of the Ontological Proof of God’s ExistenceAtomos

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Meta-Modal Actuality: A Dynamic Framework for Possibility, Actualization, and CausalityAtomos

Meta-Modal Actuality: A Dynamic Framework for Possibility, Actualization, and Causality

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Killing, Morality, and the Human Condition: A Philosophical InvestigationAtomos

Killing, Morality, and the Human Condition: A Philosophical Investigation

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The Intricacy of Existence: A Philosophical Exploration of Complexity, Contingency, and Divine AgencyAtomos

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The Ethics of Procreation and the Rational Acceptance of Life: A Critical Engagement with Weinberg’s ArgumentAtomos

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Imagination, Consciousness, and the Nature of the Soul: A Philosophical InquiryAtomos

Imagination, Consciousness, and the Nature of the Soul: A Philosophical Inquiry

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The Interplay of Karma, Rebirth, and Non-Self in Buddhist Philosophy: A Metaphysical InquiryAtomos

The Interplay of Karma, Rebirth, and Non-Self in Buddhist Philosophy: A Metaphysical Inquiry

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Metaphysical Perspectives: A Comparative Analysis of Theism and AtheismAtomos

Metaphysical Perspectives: A Comparative Analysis of Theism and Atheism

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The Infinite Universe, Death, and the Search for Meaning: A Philosophical Exploration of Existence, the Divine, and Human MortalityAtomos

The Infinite Universe, Death, and the Search for Meaning: A Philosophical Exploration of Existence, the Divine, and Human Mortality

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The Intricacy of Existence: A Philosophical Exploration of Complexity, Contingency, and Divine Agency

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Terms & Concepts

B

Bad faith

The refusal to accept responsibility for one’s freedom and, therefore, also for one’s choices. The term comes from the twentieth-century existentialist Jean-Paul Sartre. https://youtube.com/shorts/U0965UIQpjU?feature=share
S

Subcontraries

A pair of propositions that cannot both be simultaneously false but can be simultaneously true. In categorical logic, I- and O-propositions are sub contraries. If one is false, the other…
F

Formal proof

In a formal deductive system, a step-by-step demonstration of the truth of a claim followingfrom a set of premises. (See also Proof.) https://youtube.com/shorts/DT1-2WEXXbc?feature=share
T
Thin concept
S
Sublime
D
Disjunction introduction
P
Principle of equal liberty
T
Transcendent
W
Weak argument
D
Datum
I
Infinite regress (or regression)
R
Ren
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