Answer:
It reveals Cassius’s sense of optimism in spite of the dark omens.
Explanation:
In "Shall I Compare Thee to a Summer's Day" Shakespeare promises the subject of his sonnet Immortality. He says that as long as men can breathe (which basically means as long as men exist on this planet) or as long as eyes can see, the feelings and the poem will exist, and it gives her life, thus making her practically immortal.
Answer:
getting more information on the Author, dates on when they were said, the source, or even the writing style of the person who wrote it.
Answer:
It depends on the text, try to search the role of the person who said it, it might give you a clue
Good luck!