As quoted in Dictionary of Scientific Biography (1970 - 1990) edited by M Steck.
“Logic is not only an exact science, but is the most simple and elementary of all sciences; it ought therefore undoubtedly to find some place in every course of education.”
Preface.
Elementary Lessons on Logic (1870)
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William Stanley Jevons 69
English economist and logician 1835–1882Related quotes
“Science, according to science, ought to be the most important attribute of human beings.”
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p. 129 http://books.google.com/books?id=KsI3sswEg14C&pg=PA129&dq=%22if+every+trace+of+any+single+religion%22
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Quoted from: Maharishi Mahesh Yogi's Main Message - from Victory Day, October 21, 2007 Maharishi Channel http://www.bienfaits-meditation.com/en/maharishi/videos/maharishi_main_message_2007
“Logic is the most useful tool of all the arts. Without it no science can be fully known.”
Summa Logicae (c. 1323), Prefatory Letter, as translated by Paul Vincent Spade (1995) http://www.pvspade.com/Logic/docs/ockham.pdf
Context: Logic is the most useful tool of all the arts. Without it no science can be fully known. It is not worn out by repeated use, after the manner of material tools, but rather admits of continual growth through the diligent exercise of any other science. For just as a mechanic who lacks a complete knowledge of his tool gains a fuller [knowledge] by using it, so one who is educated in the firm principles of logic, while he painstakingly devotes his labor to the other sciences, acquires at the same time a greater skill at this art.
Robert Edouard Moritz. On Mathematics and Mathematicians https://archive.org/details/onmathematicsmat00mori, 1914, 1942, 1958; p. v; Preface, lead sentence