Chapter 5

THE PRINCIPLE OF UNITY.

Importance of the unifying principle. It is a fixed idea or a fixed emotion.--Their equivalence.--Distinction between the synthetic principle and the ideal, which is the principle of unity in motion: the ideal is a construction in images, merely outlined.--The principal forms of the unifying principles: unstable, organic or middle, extreme or semi-morbid.--Obsession of the inventor and the sick: insufficiency of a purely psychological criterion. 79

SECOND PART.

THE DEVELOPMENT OF THE IMAGINATION.