Full Idea
According to the Stoics, the division of the soul threatens the unity of the person and obscures the responsibility we have for our supposedly nonrational desires.
Gist of Idea
Division of the soul divides a person, reducing responsibility for the nonrational part
Source
report of Stoic school (fragments/reports [c.200 BCE]) by Michael Frede - A Free Will 3
Book Reference
Frede,Michael: 'A Free Will' [Univ of California 2011], p.33
A Reaction
Does this imply the concept of a 'person', if it places great store by unity? Disagreement over mental unity is one of the great threads running through philosophy. See Nietzsche on 'drives' for the rival view.