Quoted in Brad Cook, "John Carmack: Making the Magic Happen" http://www.apple.com/games/articles/2009/02/johncarmack/ Apple.com
John D. Carmack: Doing
John D. Carmack is American computer programmer, engineer, and businessman. Explore interesting quotes on doing.Quoted in "John Carmack Answers" http://slashdot.org/games/99/10/15/1012230.shtml Slashdot (1999-10-15)
Quoted in "The Rise and Fall of Ion Storm" http://slashdot.org/comments.pl?sid=25551&cid=2775698 Slashdot (2002-01-02)
Quoted in "John Carmack's Blog" http://media.armadilloaerospace.com/misc/government.htm
BAFTA Fellowship acceptance speech, "BAFTA Games Awards 2016" https://www.youtube.com/watch?v=fyjJrF2gJ34
Quoted in Tom Ham, "Interview: John Carmack" http://archive.gamespy.com/interviews/april01/carmack/ gamespy.com (2004-01)
Speaking about mathematics in engineering, Quoted in https://www.youtube.com/watch?v=dSCBCk4xVa0&t=1271s