18 To bring about such a union of minds and uniformity of action - not without reason so greatly feared by the enemies of Catholicism - the main point is that a perfect harmony of opinion should prevail; in which intent we find Paul the Apostle exhorting the Corinthians with earnest zeal and solemn weight of words: "Now I beseech you, brethren, by the name of our Lord Jesus Christ, that you all speak the same thing, and that there be no schisms among you: but that you be perfectly in the same mind, and in the same judgment."(21)
Source: Sapientiae Christianae (Vatican.va)