Paying attention to the words in the line of the poem can help us to understand the thought conveyed by the author. The line from 'Any Human to Another," where Cullen describes that when people share each other's grief, they gain some comfort is;
"Your grief and minel Must intertwine Like sea and river"
In this line from the poem, the poet shows that when his grief and another's meet through sharing, they intertwine like the sea and river. The sea and river share similarities because they connote peace.
So, when people share their griefs, they gain comfort.
