Direct Art Magazine, "In Memoriam - Eugene James Martin", Fall-Winter 2006,Vol. 13, p. 86, http://www.saatchi-gallery.co.uk/yourgallery/artist/details.php?id=791 and http://afonline.artistsspace.org/view_artist.php?aid=3883
“One great lesson that we can learn from its systematic absence in the work of the grand theorists is that every self-conscious thinker must at all times be aware of — and hence be able to control — the levels of abstraction on which he is working. The capacity to shuttle between levels of abstraction, with ease and with clarity, is a signal mark of the imaginative and systematic thinker.”
The Sociological Imagination (1959)
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C. Wright Mills 55
American sociologist 1916–1962Related quotes
Source: 1940s, Economic Analysis, 1941, p. xv
Appeal to Youth: Intoxication-Disintoxication (1934).
Source: Model-driven development of complex software: A research roadmap (2007), p. 37
Jack Woehr. An interview with Donald Knuth http://www.drdobbs.com/an-interview-with-donald-knuth/184409858. Dr. Dobb's Journal, pages 16-22 (April 1996)
The Universe of Experience: A Worldview Beyond Science and Religion (1974)
“The entire history of software engineering is that of the rise in levels of abstraction.”
                                        
                                        Grady Booch in his talk "The Limits of Software."; Cited in: Gerry Boyd (2003) " Executable UML: Diagrams for the Future http://www.devx.com/enterprise/Article/10717." published at devx.com, February 5, 2003. 
The Limits of Software
                                    
                                        
                                        1940 - 1950 
Source: the catalogue of the 'Ideographic Picture' show, New York, 1947