“If we are to have that harmony and tranquility, that union of spirit which is the foundation of real national genius and national progress, we must all realize that there are true Americans who did not happen to be born in our section of the country, who do not attend our place of religious worship, who are not of our racial stock, or who are not proficient in our language. If we are to create on this continent a free Republic and an enlightened civilization that will be capable of reflecting the true greatness and glory of mankind, it will be necessary to regard these differences as accidental and unessential. We shall have to look beyond the outward manifestations of race and creed. Divine Providence has not bestowed upon any race a monopoly of patriotism and character. The same principle that it is necessary to apply to the attitude of mind among our own people it is also necessary to apply to the attitude of mind among the different nations.”

1920s, Toleration and Liberalism (1925)
Context: If we are to have that harmony and tranquility, that union of spirit which is the foundation of real national genius and national progress, we must all realize that there are true Americans who did not happen to be born in our section of the country, who do not attend our place of religious worship, who are not of our racial stock, or who are not proficient in our language. If we are to create on this continent a free Republic and an enlightened civilization that will be capable of reflecting the true greatness and glory of mankind, it will be necessary to regard these differences as accidental and unessential. We shall have to look beyond the outward manifestations of race and creed. Divine Providence has not bestowed upon any race a monopoly of patriotism and character. The same principle that it is necessary to apply to the attitude of mind among our own people it is also necessary to apply to the attitude of mind among the different nations. During the war we were required not only to put a strong emphasis on everything that appealed to our own national pride but an equally strong emphasis on that which tended to disparage other peoples. There was an intensive cultivation of animosities and hatreds and enmities, together with a blind appeal to force, that took possession of substantially all the peoples of the earth. Of course, these ministered to the war spirit. They supplied the incentive for destruction, the motive for conquest. But in time of peace these sentiments are not helps but hindrances; they are not constructive.