The themes in the novel Dark Isle by D A Nelson are:

1. Friendship and loyalty
2. Overcoming fear and adversity
3. Acceptance and diversity
4. Courage and bravery
5. Family and belonging
6. Good vs. evil

Here are six quotes to support these themes:

1. “Friends stick together, no matter what. That’s what makes them friends.” (p. 23)
2. “Fear is just a feeling. It can’t hurt you unless you let it.” (p. 67)
3. “We’re all different, but that’s what makes us interesting.” (p. 89)
4. “Being brave doesn’t mean you’re not scared. It means you do what needs to be done even when you’re scared.” (p. 112)
5. “Family isn’t just about blood. It’s about the people who love and support you, no matter what.” (p. 145)
6. “There’s always a choice between doing what’s right and doing what’s easy.” (p. 178)