Source: The Four Pillars of Investing (2002), Chapter 4, The Perfect Portfolio, p. 115.
“It was one thing to use computers as a tool, quite another to let them do your thinking for you.”
Source: The Hunt for Red October
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Tom Clancy 83
American author 1947–2013Related quotes

“One reason you should not use web applications to do your computing is that you lose control.”
"Cloud computing is a trap, warns GNU founder Richard Stallman", in The Guardian (29 September 2008)
2000s
Context: One reason you should not use web applications to do your computing is that you lose control. It's just as bad as using a proprietary program. Do your own computing on your own computer with your copy of a freedom-respecting program. If you use a proprietary program or somebody else's web server, you're defenceless. You're putty in the hands of whoever developed that software.

Francis of Assisi, Rule of 1221, Rule 11 http://www.sacred-texts.com/chr/wosf/wosf06.htm/ - That the Brothers ought not to speak or detract, but ought to love one another.
Disputed, Preach the gospel, and if necessary, use words.

Interview in Doctor Dobb's Journal, also quoted in The Mammoth Book of Zingers, Quips, and One-Liners (2004) by Geoff Tibballs, p. 128

Comment to his staff officers, on the crucial distinction between intensive battle training and actual battle (19 May 1943), quoted in History of COSSAC (May 1944) http://www.history.army.mil/documents/cossac/Cossac.htm by Supreme Headquarters Allied Expeditionary Force

Source: Introductory lecture to Structure and Interpretation of Computer Programs http://www.youtube.com/watch?v=zQLUPjefuWA