Ivor Grattan-Guinness (1941–2014) Historian of mathematics and logic
Source: Companion encyclopedia of the history and philosophy of the mathematical sciences (2003), p. 841.
Source: 1940s - 1950s, Introduction to Operations Research (1957), p. 3; Partly cited in: Ivor Grattan-Guinness (2003) Companion encyclopedia of the history and philosophy of the mathematical sciences, Vol 1. p. 841
Context: No science has ever been born on a specific day. Each science emerges out of a convergence of an increased interest in some class of problems and the development of scientific methods, techniques, and tools which are adequate to solve these problems. Operations Research (O. R.) is no exception. Its roots are as old as science and the management function. It's name dates back only to 1940.
Ivor Grattan-Guinness (1941–2014) Historian of mathematics and logic
Source: Companion encyclopedia of the history and philosophy of the mathematical sciences (2003), p. 841.
Franklin D. Roosevelt (1882–1945) 32nd President of the United States
Noting Italy's declaration of war against France on that day, during the commencement address at the University of Virginia, Charlottesville (June 10, 1940); reported in The Public Papers and Addresses of Franklin D. Roosevelt, 1940 (1941), p. 263
1940s
Jacob Bronowski (1908–1974) Polish-born British mathematician
"Sense and Sensibility"
The Common Sense of Science (1951)
“Much of good science — and perhaps all of great science — has its roots in fantasy.”
Edward O. Wilson (1929) American biologist
Source: Letters to a Young Scientist (2013), chapter 5, "The Creative Process", page 69.
Hal Abelson (1947) computer scientist
Source: The Nature of Belief http://www.xent.com/FoRK-archive/sept97/0213.html
George Holmes Howison (1834–1916) American philosopher
Journal of Speculative Philosophy, Vol. 5, p. 175. Reported in: Memorabilia mathematica or, The philomath's quotation-book, by Robert Edouard Moritz. Published 1914
Journals
William Winwood Reade (1838–1875) British historian
Source: The Martyrdom of Man (1872), Chapter I, "War", p. 27.