Logic: The Right Use of Reason
"Come now, and let us reason together," Says the LORD. Isaiah 1:18
In the beginning was the Logos, and the Logos was with God, and the Logos was God. Jn. 1:1
The same attribute cannot at the same time belong and not belong to the same subject and in the same respect. (Aristotle)
Invalid but true --
Major premise: Dogs are brown.
Minor premise: Rover is brown.
Conclusion: Rover is a dog.
Ex: Presbyterians believe in predestination. John is not a presbyterian; therefore he does not believe in predestination (even if the premise is true, the conclusion may be false).
Don't You Believe It by A. J. Hoover, Moody, 1982, 132 pp. A great, easy-to-read introduction
to logical fallacies.
Availability: Out of Print
A Rulebook for Arguments, 3rd ed. by Anthony Weston, Hackett, 2001, 87 pp. A short handbook on writing papers and assessing arguments.
Logic: The Right Use of Reason by Isaac Watts, reprinted by Soli Deo Gloria, 1998. The well-known hymn-writer was also an expert logician. His text on logic was widely used for nearly
two centuries and has recently been reprinted.
Availability: AU library
"Evaluating the Arguments of Experts FAQ 1.0" by N.E. Barry Hofstetter. An excellent
overview of methods for analyzing expert arguments and spotting logical fallacies.
"Critical Thinking and Logic" by Douglas Wilson. Discusses the basics
of logical analysis and the difference between that and what is popularly
styled "critical thinking."
ChristianLogic.com. A very well-done web site presenting logic from a
"Basic Helps for Practical Reasoning". A nice tutorial on logical
argumentation in writing.
"The Logic Classroom". An online course on logical
analysis. Links to several excellent articles. Written from a Christian