Certain colors can fool our visual perception

What is the main idea of this paragraph

11. why is it important to use positive language in business messages?

Hurry 100 points consider the speakers in "the raven" and the speaker in "the song of wandering aengus."write two paragraphs to compare and contrast the voice in these two poems. how does the poet give the speaker in each poem a distinctive voice? what effect does this voice have in each poem?