Answer:
The speech in the lines 144-154 i Act IV scene i presents a different quality in the character of Macbeth. He is shown as a completely different person, ready to do anything to get his power, even to the extent of killing innocent people.
This speech provides a motive for Macduff to attack Macbeth and avenge the death of his household.
Explanation:
In Act IV scene i of William Shakespeare's "Macbeth", Macbeth is seen in conversation with the witches and then later on, he was told by Lennox that Macduff has fled to England. This made him angry and was the very scene where he decided to go through with whatever he decided, instead of waiting for an opportune time.
In the lines between 114 to 154, Macbeth declares that he will raid Macduff's place and kill everyone. This is in stark contrast to his previous personality, where he had to be coaxed and pressured on by his wife to do anything. He also is deviating from his usual murdering of those who are an obstacle to his attaining the throne. Rather, he is now fine with killing innocent people too.
This speech of Macbeth moves the plot forward with his act of actually killing everyone in Macduff's household. It provides a motive for Macduff to confront and avenge his family from <em>"this fiend of Scotland"</em>.
This this will help out a lot
Constructing a Cohesive Essay - Peabody Institute - Johns Hopkins University
The main idea of this poem is that the choices we make will change our lives forever.
The narrator, in the third stanza, says "<span>Oh, I kept the first for another day! / Yet knowing how way leads on to way, / <span>I doubted if I should ever come back." He meant to try the other path (the other choice) later on, but because life takes us through so many twists and turns he doubted that he would ever actually get to see what that choice held for him.
In the final stanza he states that taking the less traveled road "</span></span><span>has made all the difference." His one choice changed his life forever, and because of the word "sigh" in that last stanza we can assume that maybe it was not changed in a good way.</span>