What are the conditions necessary for the best or ideal state? (Who should be included? Who excluded? What should be the character of the citizens? What should be its size?

• 最好或最理想的城邦需要哪些必要的条件?(谁应该被包含在内?谁不应被包含?公民应该具备哪些特质?城邦的大小应该为何?