RALPH: Well Davina, here’s a clever metaphor. Lady Macbeth is comparing the brains of the drunk servants to a still, the apparatus for distilling alcoholic drinks.

DAVINA: She compares the fuzzy memories of an inebriated person to the vapors inside the still. I don’t know about you, Ralph, but that seems like an apt comparison to me.

RALPH: When the center of the brain, the reason, collects those memories, all it has to work with – just like the condenser in the still – is a puddle of formless liquid.