We should close our eyes to “the deficiencies of other souls”

       
"Let your thoughts dwell on your own spiritual development, and close your eyes to the deficiencies of other souls. Act ye in such wise, showing forth pure and goodly deeds, and modesty and humility, that ye will cause others to be awakened." (Abdu'l-Baha, Selections from the Writings of Abdu'l-Baha, p. 203)