Fear motivates many to act upon matters, be they right or wrong. In the play Macbeth it was fear that was the main motivating factor that influenced the outcome of the play. This can be proved by the subsequent murders that followed after Duncan's, why were these committed? Because Macbeth was scared of being caught and having to pay for the wrongs he had done. Also look at Lady Macbeth, he constant washing of her …showed first 75 words of 676 total…

…showed last 75 words of 676 total…the first of his crimes the rest became easier for him, pretty soon he'd just order it and not think twice. That was not the case when he first murdered Duncan. All though the play his fear of being caught, and the witches prophecies coming true make him do all these evil deeds. Fear had become the main movating factor in the play. Hopefully you have a better understanding of the play from all this.