An inevitable element of Architecture.
The necessity for order. The regulating line is a guarantee against wilfulness. It brings satisfaction to the understanding.
The regulating line is a means to an end; it is not a recipe. Its choice and the modalities of expression given to it are an integral part of architectural creation.
A regulating line is an assurance against capriciousness: it is a means of verification which can ratify all work created in a fervour.
The regulating line is a satisfaction of a spiritual order which leads to the pursuit of ingenuous and harmonious relations. It confers on the work the quality of rhythm.
The choice of the regulating line is one of the decisive moments of inspiration, it is one of the vital operations of architecture.