Louis D. Brandeis Immigrant Quotations

However great his outward conformity, the immigrant is not Americanized unless his interests and affections have become deeply rooted here. And we properly demand of the immigrant even more than this. He must be brought into complete harmony with our ideals and aspirations and cooperate with us for their attainment.

What is Americanization? It manifests itself, in a superficial way, when the immigrant adopts the clothes, the manners and the customs generally prevailing here. Far more important is the manifestation presented when he substitutes for his mother tongue the English language as the common medium of speech.