Brain metaphors

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A note for Lesson no. 2, "Your Brain Is a Network," in Seven and a Half Lessons About the Brain by Lisa Feldman Barrett.
Some context from page 29 is:

Aristotle thought of the brain as a cooling chamber for the heart....

Here are references for the various metaphors mentioned in this lesson:

  • The brain as a cooling chamber for the heart[1][2]
  • The logical (left) versus creative (right) brain[3][4]
  • System 1 and System 2[5]
    • "I describe mental life," wrote Kahneman, "by the metaphor of two agents, called System 1 and System 2, which respectively produce fast and slow thinking. I speak of the features of intuitive and deliberate thought as if they were traits and dispositions of two characters in your mind." (p. 13)


  1. Oleksowicz, Michał. 2018. "Aristotle on the Heart and Brain." European Journal of Science and Theology 14 (3): 77–94.
  2. Godwin, Dwayne, and Jorge Cham. 2013. "Aristotle Thought the Brain Was a Radiator." Scientific American, November 1.
  3. Corballis Michael C. 2014. "Left Brain, Right Brain: Facts and Fantasies." PLoS Biology 12 (1): e1001767.
  4. Cherry, Kendra. 2020. "Left Brain vs. Right Brain Dominance." Verywell Mind, April 10.
  5. Kahneman, Daniel. 2011. Thinking Fast and Slow. New York: Farrar, Straus and Giroux.