The Church must never be satisfied with the ranks of those whom she has reached at a certain point or say that others are fine as they are: Muslims, Hindus and so forth. The Church can never retreat comfortably to within the limits of her own environment. She is charged with universal solicitude; she must be concerned with and for one and all... We must... as the Lord says - go out ever anew 'to the highways and hedges' (Luke 14:23), to deliver God's invitation to his banquet also to those who have so far heard nothing or have not been stirred within.