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Still it cried, "Sleep no more!" to all the house. "Glamis hath murdered sleep, and therefore Cawdor Shall sleep no more; Macbeth shall sleep no more." (II, ii, 50-52) Sleep is one of the most powerful and most used words in the play Macbeth. Its use and implications span between both Macbeth and Lady Macbeth. Through sleep you can see the changes that go on between the two aforementioned characters. Sleep in the play is …

…is filled with many symbols. Sleep is the most dynamically used one, which helps guide and explain what is going on within the characters. Since sleep is one of the most important parts of a human's life it can be used to show changes in a person's attitude and life. Shakespeare made good use of sleep to show how Macbeth and Lady Macbeth changed and the process that they went through to complete the changes.