Meaning & Analysis
When you keep a secret to yourself, you are in complete control of it, much like a jailer is of a prisoner. However, once you reveal the secret to someone else, you lose control and become metaphorically imprisoned by the need for that person to not reveal it.
Insights
Control and Vulnerability
The proverb illustrates the transfer of power that occurs when information is shared. Initially, the keeper of the secret holds all the power. By revealing it, they surrender that power and become vulnerable to the person who now holds the information.
Irreversibility of Disclosure
This is a warning about the irreversible nature of disclosure. Once a secret is told, it can never be truly taken back. The speaker is forever bound by the consequences of their revelation, creating a perpetual state of dependency and risk.
The Burden of Trust
The proverb highlights the burden of trust. While sharing a secret is an act of trust, it simultaneously creates a form of servitude. The original secret-keeper is now a 'prisoner' to the hope that the other person will honor that trust, a hope that can be psychologically taxing.
Psychological Weight of Secrecy
The proverb captures the psychological weight of secrets. Keeping a secret requires constant vigilance (guarding a 'prisoner'), while revealing it creates a new anxiety—the fear of betrayal and the consequences of the information being used against you, which is its own form of imprisonment.
Political and Social Caution
In historical contexts, particularly in courtly or political intrigue, personal secrets were valuable currency. Revealing information could lead to blackmail, loss of power, or even death. The proverb serves as a pragmatic warning about the dangers of unguarded speech in high-stakes environments.
Power Dynamics of Information
The proverb offers a cynical but realistic perspective on social dynamics. It suggests that sharing a secret fundamentally alters the power balance in a relationship, placing the confider in a subordinate and vulnerable position, forever dependent on the discretion of another.
Rhetorical Devices
Extended Metaphor
The proverb is built on a powerful extended metaphor comparing a secret to a 'prisoner'. This vividly illustrates the concepts of control, confinement, and the reversal of roles from master to servant.
Antithesis
The structure creates a sharp contrast between the two clauses ('Thy secret is thy prisoner' vs. 'thou art a prisoner to it'). This antithesis effectively highlights the dramatic reversal of power that occurs when a secret is shared.
Conditional Structure
The 'if/then' conditional structure of the proverb creates a clear cause-and-effect relationship, framing the act of revealing a secret as a pivotal choice with inevitable and severe consequences.
Transcription
Quotations
Cross References
Related Proverbs
Original Scan

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