I. Bernard Cohen, Preface to Opticks by Sir Isaac Newton (1952)
“Of the many references to Newton in 18th-century electrical writings only a small number were to the Principia, the greater part by far were to the Opticks.”
This was true not alone of the electrical writings but also in other fields of experimental enquiry. ...[The Opticks] would allow the reader to roam, with great Newton as his guide, through the major unresolved problems of science and even the relation of the whole world of nature to Him who had created it. ...in the Opticks Newton did not adopt the motto... —Hypotheses non fingo; I frame no hypotheses—but, so to speak, let himself go, allowing his imagination full reign and by far exceeding the bounds of experimental evidence.
I. Bernard Cohen, Preface to Opticks by Sir Isaac Newton (1952)
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I. Bernard Cohen 9
American historian of science 1914–2003Related quotes
Source: Medieval castles (2005), Ch. 1 : The Great Tower : Norman and Early Plantagenet Castles

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1961, Address to ANPA
Context: I want to talk about our common responsibilities in the face of a common danger. The events of recent weeks may have helped to illuminate that challenge for some; but the dimensions of its threat have loomed large on the horizon for many years. Whatever our hopes may be for the future — for reducing this threat or living with it — there is no escaping either the gravity or the totality of its challenge to our survival and to our security — a challenge that confronts us in unaccustomed ways in every sphere of human activity.
This deadly challenge imposes upon our society two requirements of direct concern both to the press and to the President — two requirements that may seem almost contradictory in tone, but which must be reconciled and fulfilled if we are to meet this national peril. I refer, first, to the need for a far greater public information; and, second, to the need for far greater official secrecy.

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Frag. B 1, quoted in John Burnet's Early Greek Philosophy, (1920), Chapter 6.

The American Commonwealth: Volume II (New York: The Macmillan Company, 1910), pp. 810–811.
1910s

Wholf, Tracy (May 18, 2014). "'Wikipedian' editor took on website’s gender gap" http://www.pbs.org/newshour/bb/wikipedian-editor-took-wikipedias-gender-gap/. PBS NewsHour (PBS). Retrieved May 19, 2014.