Recent Issues. Chapter 8: The School of the Future. Quote 4 Post author:B. F. Skinner Foundation Post published:February 15, 2019 Post category:Skinner's Quote of the Day “An extraordinary step in the evolution of the human species brought its vocal musculature under operant control. The social environments we call languages then evolved.” (p. 87) You Might Also Like Reflections on Behaviorism and Society. Chapter 5: Walden Two Revisited. Quote 20 September 20, 2019 Contingencies of Reinforcement: A Theoretical Analysis, Preface, Quote 5 January 9, 2018 Recent Issues. Chapter 7: The Operant Side of Behavior Therapy. Quote 8 January 31, 2019