'O, beware, my lord, of jealousy; It is the green-eyed monster which doth mock The meat it feeds on'
Iago plants the suspicion while pretending to allay it
Shakespeare · Tragedies
c. 1603–04
Tragedy — from Cinthio's Gli Hecatommithi
A Moorish general in the service of Venice elopes with Desdemona, daughter of a senator, and is sent to Cyprus to meet a Turkish fleet. His ensign Iago, passed over for promotion in favour of Cassio, sets out to destroy him, using a lost handkerchief as proof of an invented adultery. The general smothers his innocent wife in her bed, learns the truth from Iago's own wife Emilia, and kills himself. Unusually for Shakespeare, the plot is domestic and almost without subplot, and the villain has more lines than the hero.
'O, beware, my lord, of jealousy; It is the green-eyed monster which doth mock The meat it feeds on'
Iago plants the suspicion while pretending to allay it
A handkerchief spotted with strawberries becomes the 'ocular proof' of adultery
Dropped by Desdemona, picked up by Emilia, planted in Cassio's lodging
'I am not what I am'
The ensign's announcement of himself in the first scene
The willow song, sung by a wife as she prepares for bed on the night she is killed
'Sing all a green willow must be my garland'
'Put out the light, and then put out the light'
The murder in the bedchamber
'Then must you speak Of one that loved not wisely but too well'
The final speech, before the suicide
'I have done the state some service, and they know't'
From the same last speech
'Demand me nothing: what you know, you know: From this time forth I never will speak word'
The villain's refusal to explain his motive