美国历史学家詹姆斯·亚当斯斯在 1931 给美国梦下的定义-- Adams, James T. 1931: "that dream of a land in which life should be better and richer and fuller for everyone, with opportunity for each according to ability or achievement. … regardless of the fortuitous circumstances of birth or position," 美国国会图书馆 (Library of Congress), The American Dream -- What is the American Dream? (http://www.loc.gov/teachers/classroommaterials/lessons/american-dream/students/thedream.html )。