a (lawyer|man) who represents himself has a fool for a client
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used to imply that it is generally unwise for someone to act as their own advocate or counselor in matters that require objectivity and specialized knowledge
The proverb "a lawyer who represents himself has a fool for a client" is often attributed to various legal traditions, particularly in English-speaking cultures, where it emphasizes the importance of seeking expert counsel. It highlights the value of perspective and expertise, reminding people that even those who are knowledgeable in a field may benefit from the guidance of another expert. The proverb serves as a cautionary reminder that seeking help is often the wisest course of action, even in situations where one might be highly skilled or experienced.
- Mary hired a lawyer to represent her in court, but she kept second-guessing his advice and tried to argue her own case.She lost the case and wasted her money.A lawyer who represents himself has a fool for a client.