Actually said by Oliver Wendell Holmes, Sr. in his book The Autocrat of the Breakfast Table: "Every now and then a man's mind is stretched by a new idea or sensation, and never shrinks back to its former dimensions."
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The mind that opens to a new idea, Never comes back to its original size.

— Albert Einstein

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "The mind that opens to a new idea, Never comes back to its original size." in the context of "Actually said by Oliver Wendell Holmes, Sr. in his book The Autocrat of the Breakfast Table: "Every now and then a man's mind is stretched by a new idea or sensation, and never shrinks back to its former dimensions."" to mean that wisdom is timeless.

Source: Wikiquote: "Albert Einstein" (Misattributed: Misattributed quotations for Einstein are very common.Dickinson, Kevin (2024-10-28), Einstein didn’t say that: How viral misquotes evolve and replicate, publisher: Big Think, retrieved: 2024-11-02) The 'What it means' explanation text was generated by Google Gemini Flash (accessed February 08, 2026). https://gemini.google.com/app
Albert Einstein

About Albert Einstein

Albert Einstein (14 March 1879 – 18 April 1955) was a Jewish German theoretical physicist, widely acknowledged to be one of the greatest physicists of all time. Einstein is known for developing the theory of relativity, but he also made important contributions to the development of the theory of quantum mechanics. Together, relativity and quantum mechanics are the two pillars of modern physics. He won the 1921 Nobel Prize in Physics for his explanation of the photoelectric effect.