The pursuit of knowledge gets Prospero into trouble in the first place. By neglecting everyday matters when he was duke, he gave his brother a chance to rise up against him. His possession and use of magical knowledge renders him extremely powerful and not entirely sympathetic. His punishments of Caliban are petty and vindictive, as he calls upon his spirits to pinch Caliban when he curses. He is defensively autocratic with Ariel. For example, when Ariel reminds his master of his promise to relieve him of his duties early if he performs them willingly, Prospero bursts into fury and threatens to return him to his former imprisonment and torment. He is similarly unpleasant in his treatment of Ferdinand, leading him to his daughter and then imprisoning and enslaving him.
Despite his shortcomings as a man, however, Prospero is central to The Tempest’s narrative. Prospero generates the plot of the play almost single-handedly, as his various schemes, spells, and manipulations all work as part of his grand design to achieve the play’s happy ending. Watching Prospero work through The Tempest is like watching a dramatist create a play, building a story from material at hand and developing his plot so that the resolution brings the world into line with his idea of goodness and justice. Many critics and readers of the play have interpreted Prospero as a surrogate for Shakespeare, enabling the audience to explore firsthand the ambiguities and ultimate