The Brain—is wider than the Sky— Theme of Wisdom and Knowledge

"The Brain—is wider than the Sky—" is all about the human brain. Which, you know, figures. The speaker is basically saying that our ability to imagine and accumulate new knowledge is the best thing ever. Though our brains are only about the size of a small rotisserie chicken, they have the ability to dream of the infinite and to constantly accumulate new knowledge. No wonder Dickinson was so inspired.

1. What ability of the human mind is the speaker bragging about when she calls the brain "wider than the Sky" (1)?
2. How does the statement that "The Brain is deeper than the Sea" (5) differ from the "wider than the Sky" (1) claim? What different ability of the human brain might the speaker be referencing?
3. When the speaker theorizes that the human mind and God might only differ "As Syllable from Sound" (12), what could she mean?

The poem celebrates the ability of the human mind both to absorb information and imagine new things.

The speaker of the poem seems blind to fact that there might be things outside of our realm of comprehension.