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used to suggests that one should be cautious of people who base their entire worldview or beliefs on a single source of information, as they may be closed-minded and resistant to new ideas or information
ProverbWhat is the origin of the proverb "beware of a man of one book" and when to use it?
The origin of the proverb "beware of a man of one book" is often attributed to the English writer Thomas Aquinas. It suggests that a person who focuses only on one source of knowledge or perspective may have a limited understanding and could be potentially dangerous or misguided. Over time, the saying has been used to warn against individuals who limit their learning to a single viewpoint or area of study, as this can lead to narrow thinking and poor judgment. It emphasizes the importance of broadening one's knowledge and perspectives for balanced thinking.
