This castle hath a pleasant seat; the air
Nimbly and sweetly recommends itself
Unto our gentle senses.

– William Shakespeare

Macbeth, Act 1, Scene 6. As Duncan approaches Macbeth’s home, he comments on the castle’s pleasant setting and also how sweet the air around it is. This is a good example of dramatic irony, because the audience is aware that Duncan is complimenting his death chamber. To the “gentle” Duncan the appearance of a pleasant atmosphere is far different from the reality of the horrible fate the Macbeths have planned for him. Appearances can deceive.