“The monkeys solved the puzzle simply because they found it gratifying to solve puzzles. They enjoyed it. The joy of the task was its own reward.”
Source: Drive: The Surprising Truth About What Motivates Us
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Daniel H. Pink 4
American business writer 1964Related quotes

“I think science is best taught as a puzzle to be solved.”
SGU, Podcast #187, February 11th, 2009 http://www.theskepticsguide.org/podcast/sgu/187
The Skeptics' Guide to the Universe, Podcast, 2000s

“Those who really solve mathematical puzzles are the physicists.”
In Interview with Professor Carlo Beenakker. Interviewers: Ramy El-Dardiry and Roderick Knuiman (February 1, 2006).
Context: … mathematicians are much more concerned for example with the structure behind something or with the whole edifice. Mathematicians are not really puzzlers. Those who really solve mathematical puzzles are the physicists. If you like to solve mathematical puzzles, you should not study mathematics but physics!

“Veronica solves little puzzles because she, like all of us, cannot unravel the bigger ones.”
Veronica Mars: The Complete First Season Reviewed by Joss Whedon http://www.ew.com/ew/article/review/dvd/0,6115,1114734_21|111120||0_0_,00.html
Source: On Writing Well (Fifth Edition, orig. pub. 1976), Chapter 21, A Writers Decisions: Organizing a Long Article, p. 254.

Source: http://uk.wii.com/software/interviews/mario_kart/vol1/index.html
Running on Faith: the Principles, Passion and Pursuit of a Winning Life (2010); as quoted in "First Read: Jason Lester’s Running on Faith" https://web.archive.org/web/20140726214009/http://lavamagazine.com/first-read-jason-lesters-running-on-faith/?cbg_tz=-60, LAVA Magazine (November 2, 2010).

Interview with Brett Martin for Time Out New York (April 1-8, 1999, on-line). http://www.hwwilson.com/_home/bios/1997004856.htm

“I am looking at you,
You at him,
Kabir asks, how to solve
This puzzle —
You, he, and I?”
Azfar Hussain translations

“It is as though a puzzle could be put together simply by shaking its pieces.”
Life Evolving : Molecules, Mind, and Meaning (2002)