I have observed after reading books written by great scientists like Einstein and Feynman that they are extremely eager to make common people understand their theories. They explain complex theories like relativity and quantum physics using very novel techniques and thought experiments that I guess are intended for an audience with non-technical background and an average IQ. Coming to this book, which is a series of four lectures by Feynman on Quantum Electrodynamics, I do not know if anyone could explain it any more simpler. Of course you will not know everything that is happening at quantum level from this series, mostly because Feynman himself doesn't know as he admits from the beginning. Feynman explains only those things that match with the results of scientific experiments. Beyond that I guess he has left it to philosophy/ God. And fortunately QED is something that is extensively tested and results are found in conformity with the theory. But believe me, it is not at all a boring read. You'll find that light can travel faster or slower, it can go in a zigzag manner instead of a straight line, particles can go backward in time, they can simultaneously be at two different locations and so on. Weird theories defying classical mechanics but experimentally proved with utmost accuracy. Also, many of the the classical physics theories that seem very obvious to us in daily world are in fact extremely complex at the fundamental quantum level but somehow consistently balance to make it look simple at a macroscopic level. My only regret as always is that if I were aware of these books at school or college level, my career path would have been different.