C. West Churchman (1913–2004) American philosopher and systems scientist
quote in: Fremont A. Shull (ed.), Selected readings in management https://archive.org/stream/selectedreadings00shul#page/n13/mode/2up, , 1957. p. 8 <br class="br">1940s - 1950s, "Management Science — Fact or Theory?" 1956