The former base their views on human incontestable limitations while the latter stand on human indisputable infinitude of possibilities in improving and perfecting themselves.

• 他说，世界就像一个点菜餐馆，每个人都认为邻座点的菜肴总比自己点的菜肴更加诱人、更加可口。第三，人类有幽默感。