What is meant by the qoutation? Be lion-mettled, proud, and take no care Who chafes, who frets, or where conspirers are. Macbeth shall never vanquished be until Great Birnam Wood to high Dunsinane Hill Shall come against him.

In Shakespeare's "Macbeth," the protagonist talks to the witches, who foresee his future and give them a false sense of security. For instance, the Third Apparition shows a child being crowned and tells Macbeth not to fear haters or conspirers because he will be safe until the forest moves to his castle. As a consequence, Macbeth is now (falsely) convinced that he will rule forever, because he will not be harmed, nobody will overthrow him, and it is impossible for a forest to move.