Weep not that the world changes -- did it keep a stable, changeless state, it were cause indeed to weep.

So live, that when thy summons comes to join

The innumerable caravan, which moves

To that mysterious realm, where each shall take

His chamber in the silent halls of death,

Thou go not, like the quarry-slave at night,

Scourged to his dungeon, but, sustained and soothed

By an unfaltering trust, approach thy grave

Like one who wraps the drapery of his couch

About him, and lies down to pleasant dreams.

William Cullen Bryant Bibliography - a bibliography, including list of critical resources.