The chain is no stronger than its weakest link.

Similar proverbs in the same language

 English

• The thread breaks where it is weakest.  

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Similar proverbs in another language

 French

• Trop menu, le fil casse.   Show translation Too small, the wire breaks.
• Le fil ténu casse.   Show translation The tenuous thread breaks.

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 German

• Wo der Faden am schwächsten ist, da bricht er.   Show translation Where the thread is weakest, that's where it breaks.

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