"It is as though the liturgy alone knows the full meaning of this notion impenetrable to reason. In any event, the liturgy alone is able to transmit it and teach it. . . . That religious trembling, that interior vertigo before the Pure, the Inaccessible, the wholly Other, and at the same time that sense of an invisible presence, the attraction of a love so infinite and yet so personal that, having tasted it, we ...