A good DAY will not mend him nor a bad day impair him

Meaning & Analysis

A person's fundamental condition or character is so constant that it cannot be improved by a single fortunate day or worsened by a single unfortunate one.

Insights

Inherent Nature

The proverb asserts that a person's essential character is unchangeable. External events, whether positive or negative, cannot alter one's core disposition.

Resistance to Influence

This describes an individual who is completely unaffected by external circumstances. They are either so resilient that hardship cannot break them or so flawed that good fortune cannot redeem them.

Steadfastness vs. Stubbornness

Viewed positively, it describes a person who is remarkably stable and consistent, maintaining their equilibrium regardless of life's ups and downs. Viewed negatively, it portrays someone who is stubbornly resistant to any change.

Psychological Determinism

This proverb reflects a deterministic view of human nature, suggesting that a person's core character is a fixed trait rather than a malleable state. It implies a belief in the 'incorrigible' individual, who is beyond the influence of either fortune or misfortune.

Moral Incorrigibility

The phrase 'will not mend him' suggests a focus on a flawed character. The proverb can be interpreted as a commentary on moral incorrigibility, where an individual is so set in their ways that neither positive reinforcement ('a good day') nor negative consequences ('a bad day') can alter their fundamental nature.

Duality of Steadfastness

The proverb presents a fascinating duality. It can describe a person of immense steadfastness and resilience, unswayed by life's volatility. Conversely, it can depict a stubborn, stagnant individual who is resistant to growth, learning, or improvement, regardless of their experiences.

Rhetorical Devices

Antithesis and Parallelism

The proverb is built on a balanced, parallel structure, contrasting 'a good day' with 'a bad day' and the verbs 'mend' with 'impair'. This creates a rhythmic and memorable statement about immutability.

Aphoristic Tone

The proverb's concise, balanced phrasing gives it an aphoristic quality, making it sound like a definitive judgment on character.

characterimmutabilitysteadfastnessstubbornnessresilienceincorrigibility
Analyzed with gemini-2.5-pro on July 3, 2025

Transcription

Quotations

1678, RAY, p. 71
1732, FUL., no. 143

Original Scan

A good DAY will not mend him nor a bad day impair him - a scanned entry from Tilley's 1950 Dictionary of Proverbs.
Scan courtesy of HathiTrust Digital Library.
Used under CC BY-NC 3.0.

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Last updated: January 27, 2026