Final answer:
The ideas conveyed in the poem "The White City" are contrasts, oxymorons, and the notion that hate can "feed ... vital blood" and make the city "sweet."
Step-by-step explanation:
The ideas conveyed in the poem "The White City" are contrasts, oxymorons, and the notion that hate can "feed ... vital blood" and make the city "sweet." The poet uses contrasting imagery and language to convey the idea of the contrasting elements in the city. For example, the metaphor of "heaven" and "hell" as an oxymoron highlights the conflicting nature of the city. Additionally, the idea that hate can have a positive effect on the city's atmosphere suggests the complex and contradictory nature of human emotions.