“It takes a very long time to become young.”
On met très longtemps à devenir jeune.
As quoted by Jean Cocteau The Hand of a Stranger (Journal d'un Inconnu). Horizon Press. 1959 [1953]. http://books.google.com/books?id=HxBJAQAAIAAJ
1950s
Original
On met très longtemps à devenir jeune.
Quotes, 1950's
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Pablo Picasso 128
Spanish painter, sculptor, printmaker, ceramicist, and stag… 1881–1973Related quotes

Source: Everybody’s Autobiography (1937), Ch. 3

Source: The Cultural Contradictions of Capitalism (1976), Chapter 6, The Public Household, p. 244
Context: Gadgets can be engineered, programs can be designed, institutions can be built, but belief has an organic quality, and it cannot be called into being by fiat. Once a faith is shattered, it takes a long time to grow again - for its soil is experience - and to become effective again.

Hardball with Chris Matthews, August 4, 2017 https://www.youtube.com/watch?v=cC_3IxKcQIA March 14, 2016 rally
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Quoted in Time magazine (13 June 1988).
Books, articles, and speeches
Source: Henri Cartier-Bresson: Interviews and Conversations, 1951-1998, The Main Thing Is Looking: Interview with Alain Desvergnes (1979), p. 70
Source: An Introduction to Cybernetics (1956), Part 3: Regulation and control, p. 260

“It takes a long time for an idea to strike.”
quoted by Sheena Wagstaff 'Edward Hopper', Tate Publishing (2004)
1941 - 1967