Which lines in this excerpt from William Cullen Bryant's "Thanatopsis" best indicate the theme of the poem?
ASo live, that when thy summons comes to join
The innumerable caravan
BTo that mysterious realm, where each shall take
His chamber in the silent halls of death,
CThou go not, like the quarry-slave at night,
Scourged to his dungeon,
Dsustained and soothed
By an unfaltering trust, approach thy grave,
Elies down to pleasant dreams.
ASo live, that when thy summons comes to join
BTo that mysterious realm, where each shall take
CThou go not, like the quarry-slave at night,
Dsustained and soothed
Elies down to pleasant dreams.