……人类不是一块空白的石板，一旦环境将一种文化刻于其上，就无法轻易地将它抹去、刻上新的内容。

——奥斯卡·汉德林[1]

[1] Oscar Handlin, "Introduction, " The Positire Contributions by Immigrants (Paris:United Nations Educational, Scientifie and Cultural Organization, 1960), p.13.