Meaning & Analysis
Everything that fools imagine or plan ends in failure.
Insights
Folly Breeds Failure
The proverb metaphorically asserts that foolish thinking—marked by ignorance, poor judgment, or delusion—is doomed to collapse. Ill-conceived ideas cannot produce successful results.
Limits of Intention Without Wisdom
It implies that mere intention or desire is insufficient for success; without sound reasoning and insight, plans are destined to falter.
Critique of Naive Optimism
The saying functions as a rebuke to naive or unrealistic hopes. It warns that foolish assumptions, even when well-meaning, are inherently unstable foundations for action.
Echoes of Medieval Wisdom Traditions
The proverb has deep roots in medieval thought, echoing texts like *Melusine* and *Huon*, where folly is associated with delusion and ruin. It reflects an enduring distrust of untested ideas and unwise thinkers.
Psychological Realism
The saying anticipates modern cognitive science: flawed reasoning, biases, and lack of foresight often result in poor outcomes. It reflects a realistic, if cynical, view of the gap between thought and effective action.
Moral Distinction Between Wisdom and Folly
The proverb aligns with the traditional moral polarity between the wise and the foolish, not merely in intellect but in ethical discernment. It serves as a cultural affirmation of prudence as a virtue.
Rhetorical Devices
Generalization
The use of 'all' and 'fools' makes a sweeping, absolutist claim that reinforces the severity of the warning and gives it proverbial authority.
Antithesis
The phrase contrasts 'fools' (irrational agents) with 'fails' (negative outcomes), emphasizing causality between poor thinking and inevitable defeat.
Alliteration
The repeated 'f' sound in 'fails' and 'fools' creates a sonic cohesion that enhances memorability and rhetorical impact.
Transcription
Quotations
That the fole thinketh oftymes commeth to foly.
It is a comune sayng that many thingis lackethe of folysshe thoughtis.
(thinks)
Cross References
- See Sk., no. 148.
Related Proverbs
Original Scan

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