OPPORTUNITY makes the thief

Meaning & Analysis

The presence of a favorable chance to steal can turn an otherwise non-thieving person into a thief.

Insights

Situational Ethics

The proverb suggests that morality is often situational rather than absolute. It implies that many people's ethical principles can be compromised when they are presented with a tempting scenario where the risk of being caught is low.

Vulnerability to Temptation

It serves as a broader commentary on human fallibility. The 'thief' symbolizes any individual who succumbs to a temptation—be it infidelity, cheating, or any other transgression—when a convenient opportunity presents itself.

Caution and Prevention

The proverb acts as a practical warning about prevention. It advises that the most effective way to prevent wrongdoing is to eliminate the circumstances that make it easy, highlighting the importance of vigilance and safeguarding.

External vs. Internal Motivation

It frames misconduct as a product of external conditions rather than solely internal character. The 'opportunity' is portrayed as an active force that 'makes' the thief, suggesting that circumstances can create the crime.

Psychology of Temptation

This proverb delves into the psychological concept of situational ethics, suggesting that moral character is not fixed but can be swayed by external circumstances. It posits that the potential for dishonesty is latent in many individuals, activated by low-risk, high-reward scenarios.

Principle of Prevention

The principle is a cornerstone of modern crime prevention and security. Systems like locks, surveillance, and secure containers are built on the assumption that removing the 'opportunity' is the most effective way to prevent the 'thief' from emerging, shifting the focus from inherent criminality to environmental controls.

Shared Responsibility

The proverb subtly shifts some responsibility from the perpetrator to the context, and by extension, to the potential victim. Related sayings like 'An open door may tempt a saint' imply that negligence or carelessness in safeguarding one's property creates a moral hazard that invites transgression.

Universal Human Weakness

The idea is not just about literal theft but extends to all forms of opportunism. It serves as a timeless caution about human nature, relevant in contexts from corporate governance and political corruption to personal infidelity, where a perceived 'open door' can lead to a breach of trust.

Rhetorical Devices

Direct Causation

The proverb uses a direct and powerful cause-and-effect structure ('X makes Y'), which makes its assertion feel definitive and memorable.

Personification

The abstract concept of 'opportunity' is personified as an active agent with the power to transform a person's moral state, giving a situational context a dynamic, compelling force.

Conciseness

The proverb's power lies in its extreme brevity and simplicity. It distills a complex observation about human psychology, morality, and crime into a memorable four-word phrase.

opportunitytemptationmoralitycrimehuman-natureprevention
Analyzed with gemini-2.5-pro on June 29, 2025

Transcription

Quotations

Opportunitie is of such force that of honest it maketh vnhonest.

1539, TAV., f. 24

Opportunitie makes a man commit larcenie.

1591, FLOR., Sec. F. XII, p. 169

Weapons themselves (saith Homer) doe draw men to fight: and opportunitie maketh theeves.

1599, RAINOLDS, Overthrow Stage Plays, p. 87

Opportunitie makes, or warrants, a thiefe.

1611, COT, s.v. Coffre

An open coffer the theefe excuses.

Ibid., s.v. Peché
1623, CAM., p. 275
1639, CL., p. 233

(a thief).

1659, N.R., p. 84

(a Thief).

1664, COD., p. 207

(a Thief).

1666, TOR., It. Prov., note 75, p. 19

*Ocassio facit furem.

1670, RAY, p. 129
1732, FUL., no. 3810

Cross References

Original Scan

OPPORTUNITY makes the thief - 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