Liturgy belongs in the order of doing (ergon) not of knowing (logos). Logical thought cannot get far with it; liturgical actions yield their intelligibility in their performance, and this performance takes place at the level of sensible realities, not as exclusively material, but as vehicles of overtones capable of awakening the mind and heart to acceptance of realities belonging to a different order.
— I. H. Dalmais, “The Liturgy as Celebration of the Mystery of Salvation”, in Principles of the Liturgy, vol. 1 of The Church at Prayer, ed. A. G. Martimort (London, 1967)