 Study Macbeth by William Shakespeare. Let's look at the character of King Duncan. More specifically, we'll look at what he says in Act 1, Scene 4. He tells Malcolm there's no art to find the mind's construction in the face. This ties in to the theme of reality and appearances. This is because King Duncan believes that you can tell someone's character just by looking at their face. This declarative sentence shows us that King Duncan is easily misguided just by trusting what he sees. This sentence uses the assonance of O in no, to, and construction. Mind's construction is a metaphor for what somebody is thinking. The pronoun he is a reference to the older thane of Cordill, MacDonald. Gentleman is a noun and this shows that Duncan relied too much on the external appearance of MacDonald. The assonance of A shows how much he was misguided by his reliance on appearances.