A knowledge of the history and evolution of the tales on which Shakespeare drew
in the composition of his plays is essential for the understanding of his work.
In re-telling a particular story, a Renaissance writer was not simply reshaping
the structure of the narrative but participating in a species of debate with
earlier writers and the meanings their tales had accrued. The stories upon which
Shakespeare's plays are constructed did not descend to him as innocent
collections of incidents, but brought with them considerable cultural baggage,
substantially lost to the modern spectator but an essential component, for a
contemporary audience, of the meaning of the work.