Censorship of Macbeth: Lady Macbeth’s famous cry “Out, damned spot!” was changed to “Out, crimson spot!” so the play would be suitable for public schools. Act 5 Scene 1 This quote is when Lady Macbeth was sleep walking and she started to have nightmares.
"Your hand, your tongue: look like the innocent flower, But be the serpent under ’t (I, v, This quote is referring to the themes of appearances and deception. Lady Macbeth is referring to Macbeth when she says this.
The three witches "Fair is Foul and Foul is Fair," Act 1 Scene 1. An extremely famous quote in Shakespeare's work and also one of the main themes in Macbeth. One could say that the quotes mean that first appearances can often be deceptive, things are not what they seem to be at first. But it also hints that not all good things are necessarily fair, and not all foul things are necessarily bad.