"Interview: Martin Gardner" by Scot Morris in Omni, Vol. 4, No. 4 (January 1982) 
Context: Ever since I was a boy, I've been fascinated by crazy science and such things as perpetual motion machines and logical paradoxes. I've always enjoyed keeping up with those ideas. I suppose I didn't get into it seriously until I wrote my first book, Fads and Fallacies in the Name of Science. I was influenced by the Dianetics movement, now called Scientology, which was then promoted by John Campbell in Astounding Science Fiction. I was astonished at how rapidly the thing had become a cult.
                                    
“Paradox is the sharpest scalpel in the satchel of science.”
            Source: Information, The New Language of Science (2003), Chapter 23, Black Holes, Where information goes to hide, p. 204 
Context: Paradox is the sharpest scalpel in the satchel of science. Nothing concentrates the mind as effectively, regardless of whether it pits two competing theories against each other, or theory against observation, or a compelling mathematical deduction against ordinary common sense.
        
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Hans Christian von Baeyer 25
American physicist 1938Related quotes
Source: Labyrinths of Reason (1988), Chapter 1: "Paradox", p. 23
The Aquarian Conspiracy (1980), Chapter Eleven, Spiritual Adventure: Connection to the Source
Source: Dreaming the Dark: Magic, Sex and Politics (1982), Ch. 1 : Power-Over and Power-From-WIthin, p. 13
Address to the Foreign Policy Association, New York City (October 20, 1945), in Fulbright of Arkansas: The Public Positions of a Private Thinker (1963)
                                        
                                        February 1985, in William Breit and Roger W. Spencer (ed.) Lives of the laureates 
1980s–1990s