And no, I do not agree with the statement that Shakespeare's plays were less calculated. Generally everyone related to you. I think it is extremely important that art has the power to move someones emotions. All those plays were about having sex with your sister and murdering everyone you knew. Well, like Lamb says, what is so great about the plays are the characters interaction with their own moral selves and that cannot as easily be acted as can be read.
Art is powerful only if one feels it's power.
But Lamb thinks that the play might not as well have been written by Shakespeare at all. He implies that the strength of the play production lies in the strength of the actors performance rather than the author of the play itself. He's almost as deluded as I am. It was kind of noble for Lamb to take care of his sister after she killed their mother. I would have been a little afraid.