'What's done cannot be undone'
- What Lady Macbeth says after Macbeth kills Duncan
- Means the violence that has started will keep spiralling and has no end
- Links to The Great Chain of being because it is fixed, same as what Lady Macbeth is telling Macbeth about fate - neither can be changed. Since Macbeth is not destined to be king, he will not be king. Both link to fate
- Links to the patriarchy - a woman's role in society is fixed and cannot be undone. When Lady Macbeth tries to change this she is punished as she kills herself and goes to Hell as per the beliefs of the time