Please analyze the following quotes from Macebeth; identify the speaker, provide context for the meaning, and interpret the meaning.
1.
Yet do I fear they nature;
It is too full o'th' milk of human kindness
To catch the nearest way. Thou wouldst be great,
Art not without ambition, but without
The illness should attend to it.
2.
The Prince of Cumberland! That is a step
On which I must fall down or else o'erleap,
For in my way it lies. Stars, hide your fires; Let not light see my black and deep desires.
3.
Hie thee hither,
That I may pour my spirits in thine ear
And chastise with the valour of my tongue
All that impedes thee from the golden round.