For the Love of Truth
Learning to Reason Well: An Introduction to Philalethic Logic
A practical, symbolic system for discerning truth in real life.
Learn → Practice → Teach → Support
Read the Text
The Preface, Chapters 1–3, and A Final Word are open to everyone — no account needed.
PracticeWork the Problems
Question-bank practice and, soon, a Practice Lab with deterministic grading.
TeachShare with Others
At home, in a co-op, or in a school — curriculum, pacing guides, and (soon) an exam generator.
SupportHelp It Grow
Report an error, suggest an improvement, or become a Member.
Reasoning well is a vanishing skill
Only a small fraction of students today receive any direct training in logic or critical thinking — and most of what remains is a truncated, centuries-old version of Aristotelian logic. Meanwhile, the ability to produce images, audio, and video that are practically indistinguishable from reality has never been more accessible. The ability to discern truth from what's right in front of us has never mattered more, or been less common.
For the Love of Truth teaches Philalethic Logic: a thorough system that is quantified, compound, modal, symbolic — and practical. It's grounded in how the human mind actually works, uses an intuitive symbolic grammar, and treats real arguments from daily life as the whole point, not an afterthought.
Grounded, not abstract
Built on how the human mind actually operates and what our ideas intend — not a purely formal exercise with no target application.
A simplified symbolic system
An intuitive notation and syntax, learnable at any age past early adolescence — while still convertible to First Order and other systems if needed.
Compound operators taken seriously
Disjunction and implication are treated in their full modal sense, resolving the nagging confusions of common truth-functional logic.
One validation method, throughout
A single, consistent truth-tree decomposition technique carries every argument from Chapter 9 onward — no method-switching required.
Everything you need to teach or learn it
Each resource is designed to work together — read a free sample of all four below.
For the Love of Truth
The complete 18-chapter course in Philalethic Logic — from the philosophical foundations of truth and belief through quantified claims, negation, truth-tree validation, and direct and compound modal reasoning, with an informal fallacy woven into nearly every chapter. Full of worked examples and practice exercises.
Teacher & Parent Supplement
Teaching notes, full answer keys, and gradable quizzes for every chapter — written for a parent or teacher who has never studied formal logic. Includes a suggested 34-week pacing guide.
Student Workbook
One additional practice lab per chapter — fresh problems in the same style and difficulty as the text's own exercises, with no answer key, for independent practice after each lesson.
Student Workbook Answer Key
Full worked answers to every practice lab in the Student Workbook — ideal for independent learners, or for parents checking work at home.
Prefer to Learn Alongside an Instructor?
Family Membership includes a live weekly class taught by the author, plus a physical book set and everything in Member digital access. See current pricing and what's included.