Full Idea
Right action is whatever, once it has been done, has a reasonable justification.
Gist of Idea
Right actions, once done, are those with a reasonable justification
Source
Sextus Empiricus (Against the Professors (six books) [c.180], 7.158)
Book Reference
'The Hellenistic Philosophers:Vol.1 translations', ed/tr. Long,A. /Sedley,D. [CUP 1987], p.451
A Reaction
Why does he add 'once it has been done'? Wouldn't a proposed action be right if it had a reasonable justification? This grows out of the classical and Stoic emphasis on reason in ethics, and leads towards Scanlon's Contractualism.