readRead Roger penrose'sPenrose's The Emperor's new mindNew Mind.It It is a wonderful book and discusses in detailsdetail some related issues about a physical theory, especially chapter-5 5. However, I think that the beauty can only be perceived not explained. I dontdon't know why you said that " A lot of physicists would have agreed that General Relativity is a beautiful theory......" .The same can be said about Quantum mechanics! am I right?