mental division

From Freud on the couch

However, it also suggests that Freud was getting a little tired
of Jung’s emotional outbursts and demands on his time and that
he had no intention of smoothing things over with his erstwhile
disciple. If the break was not yet open, Hi

What do you think the mental division in the context?

I thought that it is just a metal desease (going crazy by stress)

but after searching the term in google,

it is confusing as the definition seems 'doing math in mind'


Thank you so much as always.

Here, it means "a division between them in the way they thought (or, in the way they thought about each other)."

In other contexts, "mental division" could refer to working through the mathematical operation of division in your head.