Read the passage below and answer the question. The wild gander leads his flock through the cool night,
Ya-honk he says, and sounds it down to me like an invitation,
The pert may suppose it meaningless, but I listen close,
Find its purpose and place up there toward the wintry sky,
(lines 236 - 239)
What theme is developed in this passage from "Song of Myself"?
a distrust of individualism
the inability to find inner truth
people's failure to connect with one another
the poet's unity with the natural world