Final answer:
The speech reveals Macbeth's state of mind and his increasing guilt and internal conflict.
Step-by-step explanation:
The speech reveals Macbeth's state of mind by showing his guilt and remorse after committing the murder. In earlier lines of the scene, Macbeth is shown to be in a state of panic and shock, as he is deeply disturbed by what he has done. However, in earlier lines in Act 5, he is shown to be more resolved and determined to carry out his plans.
For example, in line 895, Macbeth describes himself as being amazed, temperate, and furious all at once, showing his conflicted state of mind. Additionally, in lines 695-700, Macbeth hears a voice crying 'Sleep no more!' which reveals his guilt and his feeling that he will never be able to find peaceful sleep again.
In conclusion, Macbeth's state of mind has shifted from earlier in this scene and earlier in Act 5. He initially shows panic and remorse after committing the murder, but later becomes more resolved and determined. The speech and his actions throughout Act 5 reveal his increasing guilt and internal conflict.