The way to the goal seems chaotic and interminable at first and only gradually do the signs increase that it is leading anywhere. The way is not straight but appears to go around in circles. More accurate knowledge has proved it to go in spirals: the dream-motifs alway return after certain intervals to definite forms, whose characteristic it is to define a center. And as a matter of fact the whole process revolves about a central point or some arrangement round a centre.

Carl Jung, Psychology and Alchemy