Full Idea
If someone knows the nature of everything, how could he fail to be able also to act correctly in every case?
Gist of Idea
How could someone who knows everything fail to act correctly?
Source
Anon (Diss) (Dissoi Logoi - on Double Arguments [c.401 BCE], §8)
Book Reference
'The First Philosophers', ed/tr. Waterfield,Robin [OUP 2000], p.297