Source: What is Political Philosophy (1959), p. 73
“Our ideas are transformed sensations.”
As quoted in Treasury of Wisdom, Wit and Humor, Odd Comparisons and Proverbs (1878), p. 204.
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Étienne Bonnot de Condillac 7
French academic 1714–1780Related quotes

“The power of ideas to transform the world is itself accelerating.”
The Singularity Is Near: When Humans Transcend Biology (2005)

Materialism and Empirio-Criticism (1908)

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 universe is transformation; our life is what our thoughts make it.”

in Confidences of an artist (1894) published posthumously in Paris in 1922 as part of the book of memoirs To himself; as quoted by Paul Westheim in Confessions of Artists - Letters, Memoirs and Observations of Contemporary Artists, Propyläen Publishing House, Berlin, 1925: p. 82

Source: Practical Pictorial Photography, 1898, The application of the foregoing principles, p. 12