William Cullen Bryant (November 3, 1794 – June 12, 1878) was an American romantic poet, journalist, and long-time editor of the New York Evening Post. (Wikipedia)
They talk of short-lived pleasure -- be it so --
pain dies as quickly: stern, hard-featured pain
Expires, and lets her weary prisoner go.
The fiercest agonies have shortest reign;
And after dreams of horror, comes again
The welcome morning with its rays of peace.