Here are some memorable references from Hotel del Luna :

Jang Man-wol: "You have entered the place where the moon stood still and time stopped."

Goo Chan-sung: "Even if it's not me, one day you will have to let go of the things you are holding on to."

Jang Man-wol: "People should be punished for the mistakes they make. But you can forgive them if you wish."

Mago: "Even the smallest choice can change someone's fate."

Jang Man-wol: "Don't live too long, because you will feel alone."