Lungs Duncan Macmillan Monologue May 2026

The key to the monologue is this line: “I’m not a bad person.”

If you’ve been assigned the male monologue from Duncan Macmillan’s Lungs , you already know it’s deceptively simple. Two characters (W and M), no set, no props, just two people in a bare space navigating a high-stakes conversation about having a child. But the monologue often referred to as the “I’m not a bad person” speech (M’s breakdown in the middle of the play) is a beast of anxiety, love, and eco-guilt. lungs duncan macmillan monologue

In Lungs , M and W are a couple trying to decide whether to bring a child into an overheating, overpopulated, politically broken world. The monologue happens after W has pushed M to admit his fears. He spirals. This isn’t a villain’s speech or a hero’s declaration—it’s a panic attack wrapped in intellectual guilt. The key to the monologue is this line:

Here’s a helpful blog post tailored for actors, students, or theater lovers looking to understand and perform the “Lungs” monologue by Duncan Macmillan. Cracking the Code of Duncan Macmillan’s “Lungs” – A Guide to the “I’m not a bad person” Monologue In Lungs , M and W are a