The following is from page 76 of Henri de Lubac’s Catholicism: Christ and the Common Destiny of Man, first published in 1947 as Catholicisme: les aspects sociaux du dogme.
But the Church, the only real Church, the Church which is the Body of Christ, is not merely that strongly hierarchical and disciplined society whose divine origin has to be maintained, whose organization has to be upheld against all denial and revolt. That is an incomplete notion and but a partial cure for the separatist, individualist tendency of the notion to which it is opposed; a partial cure because it works only from without by way of authority, instead of effective union. If Christ is the sacrament of God, the Church is for us the sacrament of Christ; she represents him, in the full and ancient meaning of the term; she really makes him present. She not only carries on his work, but she is his very continuation, in a sense far more real than that in which it can be said that any human institution is its founder’s continuation. The highly developed exterior organization that wins our admiration is but an expression, in accordance with the needs of this present life, of the interior unity of a living entity, so that the Catholic is not only subject to a power but is a member of a body as well, and his legal dependence on this power is to the end that he may have part in the life of that body. His submission in consequence is not an abdication, his orthodoxy is not mere conformity, but fidelity. It is his duty not merely to obey her orders or show deference to her counsels, but to share in a life, to enjoy a spiritual union. Turpis est omnis pars universo suo non congruents. (Shameful is every part not in conformity with its whole. ~ Augustine, Confessions)