"Movement is meant to express, the rise and fall, the advance and recess, with other diversity of form, in the different parts of the building, so as to add greatly to the picturesque of the composition. For the rising and falling, advancing and receding, with
the convexity and concavity, and other forms of the great parts, have the same effect in architecture, that hill and dale, fore-ground and distance, swelling and sinking have in landscape: that is, they serve to produce an agreeable and diversified contour, that groups and contrasts like a picture and creates a variety of light and shade, which gives great spirit, beauty and effect to the composition."