Final answer:
The phrases 'a house on high' and 'that mighty Architect' have symbolic meanings in literature, representing a place of safety and a higher power respectively.
Step-by-step explanation:
The phrase 'a house on high' and the reference to 'that mighty Architect' have symbolic meanings in literature. 'A house on high' can symbolize a place of safety, refuge, or a higher state of being. 'That mighty Architect' refers to a higher power, such as God or a divine being, who is seen as the creator or designer of the universe. These symbols are used to convey deeper meaning and themes in literary works.
Learn more about Symbolism in literature