Source: Principles of Systems (1968), p. 4-1 as cited in: Richardson, George P. " Reflections on the foundations of system dynamics http://obssr.od.nih.gov/issh/2012/files/Richardson%202011.pdf." System Dynamics Review 27.3 (2011): 219-243.
“Typically, a subclass augments or redefines the existing structure and behavior of its superclasses.”
Source: Object-oriented design: With Applications, (1991), p. 56
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Grady Booch 35
American software engineer 1955Related quotes
Source: Sisters in Crime: The Rise of the New Female Criminal (1975), P. 55.

“A class is a set of objects that share a common structure and a common behavior”
Source: Object-oriented design: With Applications, (1991), p. 513

2014, Speech: Sponsorship Speech for the FY 2015 National Budget

2014, Speech: Sponsorship Speech for the FY 2015 National Budget

Martin Fowler at refactoring.com as cited in: Lawrence Bernstein, C. M. Yuhas (2005) Trustworthy Systems Through Quantitative Software Engineering. p. 266
Source: "An Approach to a Theory of Bureaucracy," 1943, p. 50

Herbert A. Simon (1986) in Preface to: Gilad & Kaish (eds.), Handbook of Behavioral Economics, p. xvi.
1980s and later
Dimensions of History, Chapter: Intellectuals and Society, p. 56
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