Duncan is too trusting of a king as this later backfires when he is murdered
Links in to the Machiavellian principles that a king should be both loved and feared. In this example he is not feared at all and this gets used against him
'I built an absolute trust'
Claiming that he had complete trust in the former Thane of Cawdor
Links in to the Machiavellian principles
Warning to the audience that Macbeth will also rebel against Duncan's rule
