Overnight Mississippi River Cruises?

What is the meaning of the poem "the mississippi river empties into the gulf" ? Please Help!?

• The Mississippi river empties into the gulf and the gulf enters the sea and so forth, none of them emptying anything, all of them carrying yesterday forever on their white tipped backs, all of them dragging forward tomorrow. it is the great circulation of the earth's body, like the blood of the gods, this river in which the past is always flowing. every water is the same water coming round. everyday someone is standing on the edge of this river, staring into time, whispering mistakenly: only here. only now. -Lucille Clifton What is the meaning of this passage of the poem? "it is the great circulation of the earth's body, like the blood of the gods, this river in which the past is always flowing." And the meaning of this passage of the poem: everyday someone is standing on the edge of this river, staring into time,

• Answer:

  The great circle of life...