By all means persevere and associate in a friendly spirit
with other groups of young people, particularly of a different race or minority
nationality, for such association will demonstrate your complete conviction of
the oneness of mankind and attract others to the Faith, both young and old
alike.
A spirit of prejudice-free, loving comradeship with others
is what will open the eyes of people more than any amount of words. Combined
with such deeds you can teach the Faith easily.
- Shoghi Effendi (From a letter dated 18 June
1945 written on behalf of Shoghi Effendi to the Bahá'ís of Dayton, Oh; The
Compilation of Compilations, vol. II, Guidelines for Teaching)