In 
 Long Day's Journey into Night 
 , James Tyrone says, "Why can't you remember your Shakespeare and forget the third-raters? You'll find what you're trying to say in him -- as you'll find everything worth saying." 
 Not that James Tyrone was the best cultural critic of his or any other time, but I'm with him on this. 
 Also, PS: done right, this play is funny as hell. If you can't see it, you just haven't watched a good production yet.