In Shakespeare's The Tragedy of Macbeth, the audience or reader witnesses a dramatic change in Macbeth's character in Act III. Macbeth starts out a heroic man of good doings, but his whole attitude completely changes because of the murders he commits. His relationships with many characters are broken or become weak. He starts trusting no one and hating or killing everyone. His wife may have started him on his killing streak, but he continues to think, speak, and do evil all on his own. Macbeth's first murder permanently alters him from his moral state of mind. After killing Duncan, Macbeth regrets what he has done, but in Act III his feeling of remorse disappear. Before Macbeth murders Duncan, Macbeth is a very close friend to Banquo, and they are almost always together. After the murder, however, Macbeth senses suspicion on Banquo's part. Banquo says, "Thou hast it now: King Cawdor, Glamis, all as the weird women promis'd; and I do fear thou playd'st most foully for 't....". Banquo fears Macbeth has done evil things to get the kingship. Macbeth kills Banquo because of Banquo's suspicion of him. Also Macbeth is afraid of what Banquo will do to him once he finds out for sure that Macbeth has commited the murder of Duncan. Macbeth becomes extremely harsh if he wants his way. He will go to horrid extremes just so that he does not have to live his kingship in fear, but instead "to be safely thus."
             In the previous acts I and II, Macbeth took actions to secure the witches predictions, but now in act III, Macbeth begins to scheme on killing Banquo and Fleance to prevent this part of the witches' prophecy from coming true. Also in act III, Macbeth begins to take on Lady Macbeth's character. When Macbeth says, "Ay in the catalogue ye go for men; as hounds and grey hounds , mogrels spaniels, curs. Sloughs, water-rugs, and demi-wolves, are clept all by the name of dogs; the valu&a...