And yet, his book on the subject, published that year [QED: The Strange Theory of Light and Matter] does about as good a job explaining it to the average person

And yet, his book on the subject, published that year [QED: The Strange Theory of Light and Matter] does about as good a job explaining it to the average person as humanly possible. From the intro to the 2006 edition: "According to Feynman, to learn QED you have two choices: you can go through seven years of physics education or read this book".