From Here to Eternity (1951), p. 668
Context: Why was it everything was always so goddam complicated? Even the simplest things was so goddam complicated when you come to doing them.
“There will always be plenty of things to compute in the detailed affairs of millions of people doing complicated things.”
As We May Think (1945)
Help us to complete the source, original and additional information
Vannevar Bush 57
American electrical engineer and science administrator 1890–1974Related quotes

“grown-ups always say that things are complicated.”
Jonah Ryan, Chapter 37, p. 336
Variant: I don't want to be a grown-up. … Because grown-ups always say that things are complicated.
Source: 2000s, A Bend in the Road (2001)

Science in the Dock, Discussion with Noam Chomsky, Lawrence Krauss & Sean M. Carroll (2011), 2, Chomsky.info, March 1, 2006, August 16, 2011 http://www.chomsky.info/debates/20060301.htm,
Quotes 2010s, 2011

From An Insight, An Idea with Tim Berners-Lee http://www.weforum.org/sessions/summary/insight-idea-tim-berners-lee at 27:27 (25 January 2013)
Context: When somebody has learned how to program a computer … You're joining a group of people who can do incredible things. They can make the computer do anything they can imagine.

"Quo Vadimus?" http://books.google.com/books?id=vvEvAAAAMAAJ&q=%22Did+it+ever+occur+to+you+that+there's+no+limit+to+how+complicated+things+can+get+on+account+of+one+thing+always+leading+to+another%22&pg=PA34#v=onepage, The Adelphi (January 1930)

“If fifty million people say a foolish thing, it is still a foolish thing.”
Si 50 millions de personnes disent une bêtise, c'est quand même une bêtise.
As quoted in Listening and Speaking : A Guide to Effective Oral Communication https://books.google.com/books?redir_esc=y&hl=es&id=0CcWYwjwyRgC&focus=searchwithinvolume&q=foolish (1954) by Ralph G. Nichols and Thomas R. Lewis, p. 74
Also misattributed to Bertrand Russell, by Laurence J. Peter, in The Peter Prescription : How To Make Things Go Right (1976), but he subsequently attributed to France in Peter's Quotations: Ideas for Our Time (1977).
Derived variant: If forty million people say a foolish thing it does not become a wise one, but the wise man is foolish to give them the lie.
W. Somerset Maugham, A Writer's Notebook (1949), entry for 1901
Variant: If fifty million people say a foolish thing, it is still a foolish thing.

http://paws.kettering.edu/~jhuggins/humor/stupid.html
I'm a Stranger Here Myself (US), Notes From a Big Country (UK) (1998)