Source: 1960s, "Hospitals: technology, structure and goals", 1965, p. 915
“Cubism is not a manner but an aesthetic, and even a state of mind; it is therefore inevitably connected with every manifestation of contemporary thought. It is possible to invent a technique or a manner independently, but one cannot invent the whole complexity of a state of mind.”
Response to a questionnaire, from "Chez les cubistes," Bulletin de la Vie Artistique, ed. Félix Fénéon, Guillaume Janneau et al (1925-01-01); trans. Daniel-Henry Kahnweiler, Juan Gris, His Life and Work (1947)
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Juan Gris 6
Spanish painter and sculptor 1887–1927Related quotes

“War is an invention of the human mind. The human mind can invent peace with justice.”
Who Speaks for Man? (1953), p. 318.

“Maintain the same state of mind in every moment of thought, in every phase of mental activity”
Source: Hsiu-hsin yao lun (Treatise on the Essentials of Cultivating the Mind), p. 126.
Context: Do not try to search outside yourself, which [only] leads to the suffering of saṃsāra. Maintain the same state of mind in every moment of thought, in every phase of mental activity.

Robert Henry Thurston, " The Growth of the Steam Engine https://books.google.nl/books?id=dywDAAAAMBAJ&pg=PA17," in: Popular Science, Nov 1877, p. 11

His Nobel lecture, "How I Discovered Phase Contrast" (11December 1953) http://nobelprize.org/nobel_prizes/physics/laureates/1953/zernike-lecture.html

Alternating Current (1967)

Quote from 'Manifesto du Surréalisme', André Breton, Paris, Editions KRA, 1929
1920's
Quoted from: Maharishi Mahesh Yogi - Lake Louise, Canada (1968) - MaharishiUniversity http://www.bienfaits-meditation.com/en/maharishi/videos/mechanics-of-the-technique