As the Rule reminds us, the first reason for which we are gathered together in community is to live in harmony, having one mind and heart in God. This unity transcends the limits of the monastery and attains its fullness in communion with the Order and with the whole Church of Christ. The unanimity of our life, rooted in the love of God, should furnish a living example of that reconciliation of all things in Christ which our brethren proclaim in their preaching of the word. Like the Church of the apostles, our communion is founded, built up and made firm in the one Spirit. It is in the Spirit that we receive the Word from God the Father with one faith, contemplate him with one heart, and praise him with one voice. In him we are made one body, share in the one bread, and finally hold all things in common. The nuns first build in their own monasteries the Church of God which they help to spread throughout the world by the offering of themselves. They accomplish this by being of one mind through obedience, bound together by love of things that are above(cf. Col. 3:1) through the discipline of chastity, and more closely dependent upon one another through poverty. In order that each monastery be a center of true communion, let all accept and cherish one another as members of the same body, differing in native qualities and functions but equal in the common bond of charity and profession.
From the Constitutions of the Nuns of the Order of Preachers