“No plan of battle survives contact with the enemy, and time is the ultimate opponent.”
Charles Stross book Rule 34
Source: Rule 34 (2011), Chapter 1, “Liz: Red Pill, Blue Pill” (p. 16)
Source: Whispers Under Ground (2012), Chapter 25, “Ladbroke Grove” (p. 262)
“No plan of battle survives contact with the enemy, and time is the ultimate opponent.”
Charles Stross book Rule 34
Source: Rule 34 (2011), Chapter 1, “Liz: Red Pill, Blue Pill” (p. 16)
“No plan survives contact with the enemy”
Erwin Rommel (1891–1944) German field marshal of World War II
“No business plan survives its first contact with customers.”
Steve Blank (1953) American businessman
Source: The Startup Owner’s Manual (2012), p. 53.
“No battle plan survives first contact with the enemy. Not when the enemy is me.”
Lois McMaster Bujold Vorkosigan Saga
This includes a common paraphrase of a statement which originates with military strategist Field Marshall Helmuth von Moltke: "No plan of operations extends with any certainty beyond the first contact with the main hostile force."
Vorkosigan Saga, Cetaganda (1996)
“Failing to plan is planning to fail”
Alan Lakein (1973) American writer
“If you fail to plan, then you plan to fail.”
Harvey Mackay (1932) American businessman and journalist
“Unplanned Everything is the Real Plan of Life.”
Rachit Yadav (1996) Indian Author
Source: [Quote, https://www.rachityadav.in/about/ Rachit Yadav, : official Website]
Randy Pausch (1960–2008) American professor of computer science, human-computer interaction and design
Time Management (2007)