The contact of a believer with a nonbeliever must take the form of a dialogue. The all-powerful action of pure sanctity alone is dispensed from it, s… - Henri de Lubac

Henceforth the idea of human unity is born. That image of God, the image of the Word, which the incarnate Word restores and gives back to its glory, is "I myself"; it is also the other, every other. It is that aspect of me in which I coincide with every other man, it is the hallmark of our common origin and the summons to our common destiny. It is our very unity in God.<p>If, then, there took place in our past some "decisive" event that […] opened out to us the perspective of "the joy of an essentially universal union", we shall know where such an event took place.[…] Anyway, it is a fact that nowhere outside the influence of Christianity has man ever succeeded in defining its conditions; he has always wavered between the imagining of an individual survival in which beings remain separated and a theory that absorbs them in the One.

Protestantism, whether primitive or modern, Lutheran or Calvinist, orthodox or liberal, generally occurs as a religion of antitheses—and liberal theology is not the least marked by this characteristic. Either rites or morals, authority or liberty, faith or works, nature or grace, prayer or sacrifice, Bible or pope, Christ the Saviour or Christ the judge, sacraments or the religion of the spirit, mysticism or prophecy … but Catholicism does not accept these dichotomies and refuses to be merely Protestantism turned inside out.

In the One there is no solitariness, but fruitfulness of life and warmth of presence.[…] In the all-sufficient Being there is no selfishness but the exchange of a perfect Gift. The created mind, though so faint a copy of him who is, is none the less a reproduction in some sort of his structure—ad imaginem fecit eum—and practiced eyes can discern the stamp of the creating Trinity. There is no solitary person: each one in his very being receives of all, of his very being must give back to all.[…] Thus it can also be said, to exalt its inner richness and to make clear its character as an end, which all others must acknowledge, that "a person is a whole world", but it must also be added at once that this "world" presupposes others with which it makes up one world only.