I wish, however, that you would distinguish more clearly the difference of injury and hurt, and the complications of voluntary and involuntary.' You will admit that anger is of a violent and destructive nature?
'Certainly.' And further, that pleasure is different from anger, and has an opposite power, working by persuasion and deceit?
'Yes.' Ignorance is the third source of crimes; this is of two kinds--simple ignorance and ignorance doubled by conceit of knowledge; the latter, when accompanied with power, is a source of terrible errors, but is excusable when only weak and childish.

'True.' We often say that one man masters, and another is mastered by pleasure and anger.

'Just so.' But no one says that one man masters, and another is mastered by ignorance.

'You are right.' All these motives actuate men and sometimes drive them in different ways.

'That is so.' Now, then, I am in a position to define the nature of just and unjust.