Full Idea
It is quite possible for a person who has knowledge of both universal and particular to act inconsistently with his knowledge, if he is exercising knowledge of the universal but not of the particular.
Gist of Idea
A person may act against one part of his knowledge, if he knows both universal and particular
Source
Aristotle (Nicomachean Ethics [c.334 BCE], 1147a01)
Book Reference
Aristotle: 'Ethics (Nicomachean)', ed/tr. ThomsonJ A K/TredennickH [Penguin 1976], p.232
A Reaction
In this way Aristotle says (at 1147b15) that he can agree with Socrates about akrasia. I.e. that the evil deed does indeed arise from some sort of ignorance (perhaps of the relevant particular), and not just from desire.