“Our fear that Communism might someday take over most of the world blinds us to the fact that anti-communism already has.”

"Indoors and Out", Nature Magazine number 33 (May 1940) p. 255, quoted in Mark Harvey, Wilderness Forever (2005) p. 45

EPCOT promotional film (1966)

Speech to the American Legion convention, New York City (27 August 1952); as quoted in "Democratic Candidate Adlai Stevenson Defines the Nature of Patriotism" in Lend Me Your Ears : Great Speeches In History (2004) by William Safire, p. 81

Speech in Washington D.C., June 30, 1975; Solzhenitsyn: The Voice of Freedom http://www.archive.org/details/SolzhenitsynTheVoiceOfFreedom, p. 30.

Shah of Iran state visit to the USA, 1961 http://www.youtube.com/watch?v=K1a5TAepYXs,
Interviews

Comparable to remarks of William Masters, in "Two Sex Researchers on the Firing Line" LIFE magazine (24 June 1966), p. 49: "Science by itself has no moral dimension. But it does seek to establish truth. And upon this truth morality can be built."
Variants:
Science does not have a moral dimension. It is like a knife. If you give it to a surgeon or a murderer, each will use it differently.
As quoted in Futurehype: The Myths of Technology Change (2009) by Robert B. Seidensticker
Science does not have a moral dimension. It is like a knife. If you give it to a surgeon or a murderer, each will use it differently. Should the knife have not been developed?
As quoted in Science & Society (2012) by Peter Daempfle, Ch. 6, p. 97<!-- also in Good Science, Bad Science, Pseudoscience, and Just Plain Bunk: How to Tell the Difference (2013) by Peter Daempfle, Ch. 9, p. 166 -->
Responsible Scientific Investigation and Application (1976)
Context: One of the most disconcerting issues of our time lies in the fact that modern science, along with miracle drugs and communications satellites, has also produced nuclear bombs. What makes it even worse, science has utterly failed to provide an answer on how to cope with them. As a result, science and scientists have often been blamed for the desperate dilemma in which mankind finds itself today.
Science, all by itself, has no moral dimension. The same poison-containing drug which cures when taken in small doses, may kill when taken in excess. The same nuclear chain reaction that produces badly needed electrical energy when harnessed in a reactor, may kill thousands when abruptly released in an atomic bomb. Thus it does not make sense to ask a biochemist or a nuclear physicist whether his research in the field of toxic substances or nuclear processes is good or bad for mankind. In most cases the scientist will be fully aware of the possibility of an abuse of his discoveries, but aside from his innate scientific curiosity he will be motivated by a deep-seated hope and belief that something of value for his fellow man may emerge from his labors.
The same applies to technology, through which most advances in the natural sciences are put to practical use.

Source: Commissions and Omissions by Indian Presidents and Their Conflicts with the Prime Ministers Under the Constitution: 1977-2001, P.236.

Nobel Address (1991)

Variant: To effectively communicate, we must realize that we are all different in the way we perceive the world and use this understanding as a guide to our communication with others.
Source: Unlimited Power (1986), p. 237