--- title: "Meaning & Key Takeaway of: The philosophy of reasoning, to be…" description: "\"The philosophy of reasoning, to be complete, ought to comprise the theory of bad as well as of good reasoning.\" — John Stuart Mill" image: "https://sms4smile.com/quotes/i/e36/john-stuart-mill-477_ought_the-philosophy-of-reasoning-to-be-comple_449912.png" --- # The philosophy of reasoning, to be complete, ought to… ![“The philosophy of reasoning, to be complete, ought to comprise the theory of bad as well as of good reasoning.” quote by John Stuart Mill](https://sms4smile.com/quotes/i/e36/john-stuart-mill-477_ought_the-philosophy-of-reasoning-to-be-comple_449912.png) [Download](https://sms4smile.com/quotes/i/e36/john-stuart-mill-477_ought_the-philosophy-of-reasoning-to-be-comple_449912.png) [Open image](https://sms4smile.com/quotes/i/e36/john-stuart-mill-477_ought_the-philosophy-of-reasoning-to-be-comple_449912.png) > “The philosophy of reasoning, to be complete, ought to comprise the theory of bad as well as of good reasoning.” [John Stuart Mill](https://sms4smile.com/quotes/author/john-stuart-mill/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. A complete theory of reasoning must address both correct and incorrect arguments. **In simple terms:** Reasoning includes good and bad. Key Takeaway Study both sound and fallacious logic. Themes logic reasoning philosophy critical thinking Mood analytical thoughtful Type philosophical educational When to use this quote - academic debate - writing essays - making decisions - teaching philosophy Key Concepts epistemology argumentation fallacies Questions to Reflect On - How do you identify faulty reasoning? - What role does bias play in bad arguments? 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They consist of a kind of magic aura which the mind builds around cherished belief. 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