LogicMODAL LOGIC
November 15, 2023

MODAL LOGIC

A common extension to the standard formal languages outlined above is to introduce the technical machinery required to evaluate natural language arguments containing modal terminology (that is, talk of possibility…
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…
LogicHIGHER-ORDER LOGICS
November 15, 2023

HIGHER-ORDER LOGICS

The language sketched above is better referred to as first-order predicate calculus, as the language only quantifies over (first-order) individuals. A stronger language, second-order predicate calculus, can therefore be constructed…
History Of PhilosophyANALYTIC PHILOSOPHYORDINARY LANGUAGE PHILOSOPHY
November 15, 2023

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…
ANALYTIC PHILOSOPHYHistory Of PhilosophyLOGICAL ATOMISM
November 15, 2023

LOGICAL ATOMISM

Although mostly associated with the logical analysis of language, analytic philosophy began in the philosophy of mathematics. Working independently, both Gottlob Frege and Bertrand Russell pursued programs of reducing mathematics…
Philosophy BranchesBRANCHES OF PHILOSOPHY
December 12, 2023

BRANCHES OF PHILOSOPHY

Philosophy embraces the most ambitious field of inquiry—the universe, including the self and everything both physical and metaphysical. It is impossible to list all the branches of philosophy, which are…
PHILOSOPHICAL BOOKS AND TEXTCRITICAL THINKING AND LOGIC TEXTBOOKS
November 27, 2023

CRITICAL THINKING AND LOGIC TEXTBOOKS

Textbooks on critical thinking and logic.
THE EARLY MODERN PERIODHistory Of PhilosophyLIBERALISM
November 15, 2023

LIBERALISM

A political philosophy whose central claim is that a government’s authority is justified only insofar as it secures the liberty of its subjects, Liberalism is generally traced to John Locke…
THE EARLY MODERN PERIODHistory Of PhilosophyRATIONALISM
November 15, 2023

RATIONALISM

Rationalism designates a variety of philosophical schools maintaining that reason, as opposed to empirical investigation, is the most important method of acquiring knowledge.
Modern Branches of PhilosophyPhilosophy BranchesPHILOSOPHY OF SCIENCE
November 14, 2023

PHILOSOPHY OF SCIENCE

Many of the topics within the philosophy of science overlap with topics in metaphysics, epistemology, and the philosophy of language insofar as they apply within our scientific practice. Metaphysical issues,…
MEDIEVAL PHILOSOPHYHistory Of PhilosophySAINT AUGUSTINE
November 15, 2023

SAINT AUGUSTINE

Like his contemporaries, Saint Augustine (354–430) was primarily influenced by Neoplatonism, and, indeed, credited Plotinus with helping him to understand Christian theology.
FORMS OF PHILOSOPHICAL WRITINGWriting PhilosophyTHE ARGUMENTATIVE PAPER
November 19, 2023

THE ARGUMENTATIVE PAPER

Essays of assertion, affirmation, and refutation are all examples of the argumentative paper. An effective argument relies on factually true premises or premises for which you have strong support.
Writing PhilosophyWRITING IS CENTRAL TO PHILOSOPHY
November 24, 2023

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 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…
CONTINENTAL PHILOSOPHYHistory Of PhilosophyTHE FRANKFURT SCHOOL
November 15, 2023

THE FRANKFURT SCHOOL

A group of philosophers, cultural critics, and social scientists based around the Frankfurt (Germany) Institute for Social Research were primarily concerned with integrating philosophical analysis with then-recent results in the…

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Terms & Concepts

P

Paradox

A self-contradictory (and therefore absurd) conclusion drawn from seemingly true premises. https://youtube.com/shorts/gpTGqkqlYOs?feature=share
T

Truth table

A method of demonstrating how a statement’s truth value is built up from an atomic or simple sentence and the operation of the (main) connective. https://youtube.com/shorts/Qq98IsjJpG4?feature=share
E

Existential import

The assumption that at least one member of the subject class of a universal proposition exists.Aristotelian, or traditional, logic assumes existential import. The modern interpretation doesnot. (See also Categorical proposition.)…
C
Change of Quantifier (Quantifier Exchange) Rule
D
Divine command theory
S
Social contract
F
Free variable (unbound variable)
A
Absolute idealism
M
Metaphysics
E
Ethics
Q
Quantifier
E
E-proposition
View All