Final answer:
The speaker in the statement is Macbeth, as identified by his dialogue in excerpts from Shakespeare's play 'Macbeth', where he is discussing the witches' prophecies with Banquo.
Step-by-step explanation:
The speaker in the given statement is Macbeth. In the excerpts provided from the play 'Macbeth' by William Shakespeare, the quotes 'The thane of Cawdor lives: why do you dress me In borrow'd robes?' and 'Your children shall be kings. You shall be king. And thane of Cawdor too: went it not so?' are spoken by Macbeth himself. The dialogue is part of a conversation between Macbeth and Banquo after the witches prophesy that Macbeth will become the Thane of Cawdor and then king, and that Banquo's descendants will be kings.