
The Autocrat of the Breakfast Table (1858)
Often given as: A mind that is stretched by a new experience can never go back to its old dimensions.
Or: A mind that is stretched by a new idea can never go back to its old dimensions.
Actually by Oliver Wendell Holmes, Senior, from " Autocrat of the Breakfast Table https://books.google.com/books?id=BoQ3AQAAMAAJ&pg=PA502&dq=%22stretched+by+a+new+idea%22&hl=en&sa=X&ved=0ahUKEwidspn60tTJAhVJ1GMKHbt3Bn0Q6AEIHTAA#v=onepage&q=%22stretched%20by%20a%20new%20idea%22&f=false", originally published in The Atlantic, September 1858.
Misattributed
The Autocrat of the Breakfast Table (1858)
“A man's mind stretched to a new idea never goes back to its original dimensions.”
Also reported as "One's mind" instead of "A man's mind", and "can never go back" or "never regains" instead of "never goes back"; most likely properly attributed to Oliver Wendell Holmes, Sr.
Misattributed
“The mind, once stretched by a new idea, never returns to its original dimensions.”
“The mind, once stretched by an idea, never returns to its original dimension.”
Source: Think Big (1996), p. 224
“The mind that opens to a new idea, Never comes back to its original size.”
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."
Misattributed
"The True Modernism" http://reference.bahai.org/en/t/c/FWU/fwu-1.html
Foundations of World Unity
Context: Humanity has emerged from its former degrees of limitation and preliminary training. Man must now become imbued with new virtues and powers, new moralities, new capacities. New bounties, bestowals and perfections are awaiting and already descending upon him.