"Yes, as sparrows eagles, or the hare the lion./If I say sooth, I must report they were as cannons overcharged with double cracks,/So they doubly redoubled strokes upon the foe" (1.2.39-42).
"All hail, Macbeth! Hail to thee, Thane of Cawdor!/All hail, Macbeth, that shalt be king hereafter!" (1.3.52-53).
"Come, you spirits/That tend on mortal thoughts, unsex me here" (1.5.47-48).
Macbeth and Banquo are returning from a battle, in which they performed successfully.
"What beast was 't, then,/ That made you break this enterprise to me?/When you durst do it, then you were a man" (1.7.54-56).
On the way home, Macbeth and Banquo encounter three witches who give them their prophecies. They say that Macbeth will become Thane of Cawdor, and then King of Scotland.
"False face must hide what the false heart doth know" (1.7.95).
Lady Macbeth has received a letter from her husband, in which he states the prophecies given to him. Lady Macbeth's thirst for power sets a sinister plan to kill Duncan into motion.
Motif: "Look like th' innocent flower,/But be the serpent under't" (1.6.76-78).
Macbeth begins to fear the consequences of murder, so Lady Macbeth insults his masculinity. Macbeth, unable to bear the insult, decides to murder Duncan after all.
Macbeth decides that he must put his concerns behind him and murder Duncan. He knows that he needs to hide his intentions underneath a friendly expression.
The motif fair and foul appears often throughout Act One. The idea that in order for Macbeth to succeed he must cover his evil intentions with a noble exterior becomes a popular one. Lady Macbeth also enforces this motif when she plays a hospitable hostess when Duncan comes to visit.