- Philosophers (2)
- Conditionals and Entailment (7)
- Contradiction and Inconsistency (5)
- Identity (6)
- Informal Logic (16)
- Logic and Knowledge (4)
- Logic and Ontology (5)
- Paradoxes (15)
- Philosophical Analysis@ (8)
- Problem of Induction (5)
- Semantics of Logic (6)
- Truth Definitions (11)
- Vagueness (9)
See also:
- Science: Math: Logic and Foundations (771)
- Science: Science in Society: Skeptical Inquiry: Critical Thinking (26)
- Society: Philosophy: Philosophy of Science: Mathematics (29)
Why Aristotelian Logic does not Work
abelard.org
An essay at Abelard.org outlining an argument against Aristotelian syllogistic.
Symbolic Logic
earlham.edu
Online resources provided to supplement undergraduate course taught by Peter Suber. Good collection of handouts.
Dead Logicians Society
freewebs.com
Warwick university's very own logic society aiming to increase and stimulate interest in logic and philosophy of logic at the university. Offers news and events.
Nordic Journal of Philosophical Logic (NJPL)
hf.uio.no
Edited at Dep. of Philosophy, Univ. of Oslo, published by Scandinavian U.P. in hard copy and on WWW. Full-text Web edition free for personal use.- Tips on Translating English into First-Order Logic
earlham.edu
An introductory guide by Peter Suber. 
Frege's Theorem
plato.stanford.edu
Article in the Stanford Encylcopaedia of Philosophy, entitled `Frege's Logic, Theorem, and Foundations for Arithmetic'. Discusses the 1980 discovery of Crispin Wright that Frege's work of the Grundgesetze can be carried out in second-order logic with Hume's principle.
PHILOG
philog.ruc.dk
The Danish Network for Philosophical Logic and its Applications.
Humboldt State University: Argumentation and Critical Thinking Tutorial
humboldt.edu
Jay VerLinden's resource offering reviews and tests on important concepts in formal logic.
The Logic Course
thelogiccourse.com
An interactive course in formal logic, with tutorials and quizzes on critical thinking, truth-tables, and sentential.- Peirce's Logic
plato.stanford.edu
Article in the Stanford Encyclopaedia of Philosophy, by Eric Hammer. 
Logic
philosophypages.com
An online textbook by Garth Kemerling, explaining the basic elements of elementary logic at an undergraduate level.
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Psychology Today (blog)
A consistent philosophy that wants to bring all of humanity justice and happiness. Militant Islam. A belief system that will continue to target you and me. ...
and more »
huizen.daxis.nl
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abstract they practice Pure Reason or a Meta Physics based on Roman Christian A Priori and don t consider reality but have divine a priori dreams Henkt the Axe bad trips Kant was primarily interested in knowing how we can know that two spirit dreams events are connected causally rather than willing to find if spirits are there
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