The document proposes a vision for a floating city called Proteus that would cruise around the world as a self-sufficient, carbon neutral city. Proteus would be an artificial island with advanced automation and consistence with the concept of Arcology, where entire cities are contained within single structures. It would have a continuous supply of food and freshwater and minimize environmental impact through its mobility and self-sufficiency. The document outlines how future cities may incorporate vertical farming, renewable energy and water systems, efficient transport, new forms of government, population control, universal education and healthcare, and a more equitable and environmentally conscious society.