One of the central assumptions of established Shakespeare scholarship has been that the playwright produced flawless work needing no revision--that if a text was inferior in style, it could be assumed that Shakespeare did not write it. Thus Shakespeare had nothing to do with the "bad" quartos; these were instead the work of "memorial reconstruction," in which actors remembered and subsequently wrote down entire texts composed by others. In this controversial book, Eric Sams suggests that there is no evidence to substantiate memorial reconstruction, that Shakespeare very probably revised his...