By far my favorite piece of writing from Feynman is QED: http://www.amazon.com/QED-Strange-Princeton-Science-Library/dp/0691125759/ref=sr_1_1?ie=UTF8&qid=13790

By far my favorite piece of writing from Feynman is QED: http://www.amazon.com/QED-Strange-Princeton-Science-Library/dp/0691125759/ref=sr_1_1?ie=UTF8&qid=1379090424&sr=8-1&keywords=qed http://www.amazon.com/QED-Strange-Princeton-Science-Library/... Out of all his writings, this is the one that has always stuck with me. Feynman long held that one does not understand something if one cannot explain it to someone who is not deeply steeped in the subject already. I regard this lecture as probably the culmination of that philosophy for Feynman. Anybody with a deep mathematical background will be stunned on reading this book to realize that, oh, he was actually just talking about complex numbers and the path integral formulation all along. Taken from one of those reviews, I don't need to say much more than this: "He does close to the impossible by explaining the rudimentary ideas of Quantum Electro Dynamics (QED) in a manner that is reasonably accessible to those with some physics background"