The Soul, such as we are considering her here, is something venerable;
she resembles a circle which is united to the centre, and which
develops without leaving (its base of operations, the centre), thus
forming an undivided extension. To gain a conception of the order of
the three principles, the Good may be considered as a centre, the
Intelligence as an immovable circle, and the Soul as an external
movable circle impelled by desire.