Read the excerpts from "the monk's tale."

king peter of spain
o noble, worthy peter, glory of spain,
whom fortune held so high in majesty,
how bitterly should we lament thy pain,
who by thy brother driven forth to flee,
after siege wert caught by treachery,
and thus betrayed wert taken to his tent
where with his own hands he murdered thee
and gained succession to thy throne and rent!
upon and argent field an eagle sable
caught on a lime-rod gules (if you read
this riddle) brewed the treason and was able
— o 'wicked nest'! — to do a wicked deed!
no, oliver of charlemagne he, to heed
honour and truth, but brittany's mishap,
a ganelon-oliver corrupt in greed
it was that brought this king to such a trap!

king peter of cyprus
o peter king of cyprus, fine and true,
that conqueredst alexandria by the right
of arms, and didest woe on heathens too,
thy very liegemen envied thee, and spite
(no other cause) against thy chivalrous might
moved them to murder thee upon the morrow
there, on thy bed! thus fortune with a light
turn of her wheel brings men from joy to sorrow.

describe a theme that the author develops through these two excerpts. then analyze how the two excerpts interact and build on one another to develop this theme. be sure to use specific details from the text to support your ideas.