Full Idea
Nothing bad can happen to a good man.
Gist of Idea
Nothing bad can happen to a good man
Source
Seneca the Younger (On Providence [c.60], §2)
Book Reference
Seneca: 'Dialogues and Essays', ed/tr. Davie,John [Penguin 2007], p.4
A Reaction
This is a pithy summary of a well know ancient attitude - one that is rejected by Aristotle, but defended by Socrates. It depends what you mean by 'bad' - but that is a rather modern response.