The lyrics of "Is" by Quadrivium talk about a person being consumed by the cold and frosty nature of the world. They feel like they are being haunted by the moon's cold gaze and are trapped in a soulless existence. Despite feeling condemned and wandering alone, they continue to move towards the domain of darkness. In American terms, this song could be interpreted as a reflection of someone feeling isolated and lost in the harsh realities of life. They may feel like they are being weighed down by the coldness and emptiness of their surroundings, but they continue to push forward, seeking solace in the darkness. It captures a sense of determination and resilience in the face of adversity.