"It is not my intention to discuss the literary values of the plays, or to analyze them from a theatrical, philosophical, or psychological point of view. Others have done this far beyond any poor capacity I might have in that direction. [..] What I can do, however, is to go over each of the thirty-eight plays and two narrative poems written by Shakespeare in his quarter century of literary life, and explain, as I go along, the historical, legendary, and mythological background."
in "Asimov's Guide to Shakespeare" by Isaac Asimov
Read on, if you like.