The Black Riders And Other Lines, published in 1905, contains all of the most prevalant literary techniques Stephan Crane employed throughout his works, especially
irony (real irony, not the Alanis Morrisette kind), paradox, and religion.
One of my favorite passages is The Black Riders And Other Lines: LIV:
"It was wrong to do this," said the angel.
"You should live like a flower,
Holding malice like a puppy,
Waging war like a lambkin."
"Not so," quoth the man
Who had no fear of spirits;
"It is only wrong for angels
Who can live like the flowers,
Holding malice like the puppies,
Waging war like the lambkins."