Methods of Study in Natural History (1863), ch. 1, p. 7 https://babel.hathitrust.org/cgi/pt?id=mdp.39015065771407;view=1up;seq=21
“Ultimately, discovery and invention are both problems of classification, and classification is fundamentally a problem of finding sameness. When we classify, we seek to group things that have a common structure or exhibit a common behavior.”
Source: Object-oriented design: With Applications, (1991), p. 133
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Grady Booch 35
American software engineer 1955Related quotes
Preface to the first edition.
Classification and indexing in science (1958)
Source: Fundamentals of measurement and representation of natural systems. (1978), Ch. 2. The Basic Formalism; Quoted in: Mikulecky, Donald C. " Robert Rosen: the well‐posed question and its answer‐why are organisms different from machines? http://www.people.vcu.edu/~mikuleck/PPRISS3.html." Systems Research and Behavioral Science 17.5 (2000): 419-432.
Henri Poincaré, Critic of Crisis: Reflections on His Universe of Discourse (1954), Ch. 1. The Iconoclast
“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
Source: 1960s, Economics As A Moral Science, 1969, p. 12
Source: Object-oriented design: With Applications, (1991), p. 141
Source: System Engineering (1957), p. 302; As cited in: Thomas C. Ford (2008) Interoperability Measurement. p. 146