Upon Further Reflection. Chapter 2: What Is Wrong with Daily Life in the Western World? Quote 3 Post author:B. F. Skinner Foundation Post published:March 3, 2020 Post category:Skinner's Quote of the Day “The human species took a unique evolutionary step when its vocal musculature came under operant control and language was born.” (p. 16) You Might Also Like Recent Issues. Chapter 2: The Origins of Cognitive Thought. Quote 2 November 6, 2018 Cumulative Record. Chapter 13: Teaching Machines. Quote 5 October 25, 2022 Science and Human Behavior, Chapter 15: “Self-Control”, Quote 3 August 26, 2016