Think about your Mother the Holy Church and consider how, if one member suffers, the whole body suffers.
Your body needs each one of its members, but each member needs the whole body. What would happen if my hands were to stop doing their duty...or if my heart were to stop beating? (The Forge, 471)
Pray to God that in the Holy Church, our Mother, the hearts of all may be one heart, as they were in the earliest times of Christianity; so that the words of Scripture may be truly fulfilled until the end of the ages: Multitudinis autem credentium erat cor unum et anima una - the company of the faithful were of one heart and one soul.
I am saying this to you in all seriousness: may this holy unity not come to any harm through you. Take it to your prayer. (The Forge, 632)
Be loving towards those who are ignorant of the things of God. And with all the more reason treat those who do know him in the same way. If not, you cannot do the former either. (The Forge, 868)