"Much Madness is divinest Sense" Emily Dickinson

This poem is sort of confusing. The speaker uses juxtaposition in lines 1 and 3, saying that madness is sense in line 1, and sense in madness in line 3. In the speaker's opinion madness is a good thing, because madness is judged by the "discerning eye." In other words, having sense and being "normal" is just conforming to society. She says if you "Assent," or agree, then you are sane. If you "Demur," or take exception to, then you are mad. If one is mad, this person will be "handled with a chain," which means punished, imprisoned, looked down upon, etc. Great people in our history have been considered mad and achieved great accomplishments, such as Jesus and Galileo. I think Emily Dickinson is one of those people who tries to be abnormaly weird on purpose, just so she is not like others, and I feel like this poem shows it well.