As both Aristotle and Lonergan acknowledged, forms are grasped by mind in images.

τα μεν ουν ειδη τον οητικον εν τοις φαντασμασι νοει

[Aristotle, De Anima, III, 7, 431b 2] and [CWL 3, title page]

Thus, if we want to have a comprehensive grasp of everything in a unified whole, we shall have to construct a diagram in which are symbolically represented all the various elements along with all the connections between them. [McShane 2014, 11 (quoting CWL 7, 151)]

We wish here to suggest the insights the reader should have to fully appreciate all that is contained in the Diagram of Rates of Flow. (continue reading)