My first world is humanity. My second world is humanism. And, I live in the third world being merely a human.
First, people should open their eyes to see structural sin, which is the very existence of a First and Third World. As long as there's a First World, there won't be peace because there won't be justice or sharing. (Pedro Casaldaliga, p. 243)
The U.S. Will never be a free and happy nation while they continue to exploit and marginalize the Third World. The Third World will never be happy or free so long as there is a First World stuck in the mire of consumerism, alienation, indifference. (Clodovis Boff, p. 161)