Full Idea
It is right to lie to your parents, in order to get them to take a good medicine they are reluctant to take.
Gist of Idea
It is right to lie to someone, to get them to take medicine they are reluctant to take
Source
Anon (Diss) (Dissoi Logoi - on Double Arguments [c.401 BCE], §3)
Book Reference
'The First Philosophers', ed/tr. Waterfield,Robin [OUP 2000], p.292
A Reaction
I dread to think what the medicines were which convinced the writer of this. A rule such as this strikes me as dangerous. Justifiable in extreme cases. House on fire etc.