Macbeth: The Weird Sisters In Elizabethan times, witches were a natural part of life. Macbeth witnessed this, as seen in the play Macbeth, by William Shakespeare. The evil forces that the weird sisters, who were witches, possessed, put Macbeth's mind in another direction. This direction was the beginning of his moral downfall and the destruction of his destiny. The weird sisters warned Macbeth of this in the three apparitions but he continued living his life without realizing that they were speaking of him. Without the weird sisters, Macbeth would have lived a very different life. It is unknown whether it would have been better or worse. The weird sisters affected Macbeth i