Scrappy Jack's World-Wide Theatricals and Dime Museum:
The first thing to hold in your mind when working with Shakespeare is that he wrote for the stage, not for the page. The Globe was open to the sun, half the audience was standing and the reverent, hushed atmosphere of today’s audience was something a player had to earn and fight to keep against great odds, not something assumed. For the actor, this translates simply to making the primary focus and scene partner not your fellow actor, but the audience immediately in front of you. It is not a job for psychological realism or imitative dexterity; it is a job for speaking clearly and standing still. The audience is directly addressed, of course, in the constant soliloquies and asides, but these moments are not departures from the world of the play but rather logical extensions.
When playing Shakespeare, you are never in Verona, never in Arden, never in Egypt, Rome or England. You are always on a stage, playing a role in front of an audience. This consciousness will both heighten the urgency of your speech and action and add a necessary freedom and critical distance to the degree of your role-playing. By not burying yourself in character, you remain free to engage in the larger wordplay and dramatic conceits of the language. While this understanding is blatantly essential when playing a fool or a rustic, it is no less necessary in the more subtle and complex roles. There is always an awareness in Shakespeare that another living being is watching and listening. To disregard this is as crippling as disregarding the rhythm and meter of iambic pentameter.