Recent Issues. Chapter 11: A New Preface to Beyond Freedom and Dignity. Quote 5 Post author:B. F. Skinner Foundation Post published:March 20, 2019 Post category:Skinner's Quote of the Day “Both natural selection and operant conditioning have been slow to make their way as scientific explanations because they conflict with well-established views. Selection replaces purpose, for example.” (p. 115) (pp. 114-115) You Might Also Like About Behaviorism, Chapter 12: The Question of Control, Quote 11 August 30, 2017 Science and Human Behavior, Chapter 2 A Science of Behavior?, Quote 11 January 25, 2016 About Behaviorism, Chapter 7: Thinking, Quote 3 May 15, 2017