share+its+pain

The poem is telling people about a person who is depressed, who shares the world pain. The person in the poem walks the streets at night, alone. This person has the ability to save the world from whatever is out to destroy it because they are almost one with the world. In the line that says he who must save the world, must share its pain, the poet is stating that almost all hero's have lost things important to them, and understand the true meaning of suffering and pain, it also is hinting that to save something you must make sacrafices.