when Plato turns to accidental homicide, he says… The most significant words, however, are ‘with his own hand’. They imply that, in turning from the above-mentioned cases which carry no penalty we have now come to a new category in which the killer is considered to have killed with his own hand
Adkins argues that Plato’s homicide legislation, like the earlier Tetralogies, turns on the causality criterion of ‘killing with one’s own hand,’ revealing that moral intentionality is secondary to the metaphysical fact of physical causation.
, Merit and Responsibility: A Study in Greek Values, 1960thesis