38 If we can only stir up this awareness of the Church in ourselves and foster it in the faithful by the noble and pastoral art of education, many of the apparent difficulties which are today exercising the minds of students of ecclesiology will in fact be overcome. I mean such difficulties as how the Church can be at once both visible and spiritual, free and yet subject to discipline, claiming to be communal in character and yet organized on a sacred, hierarchical basis, already holy and yet still striving for holiness, at once both contemplative and active, and so on. All these matters will become clear through our actually living the Church's life. This is the best illustration and confirmation of its teaching.
Source: Ecclesiam Suam (Vatican.va)