Respectfully Quoted: A Dictionary of Quotations. 1989.
| NUMBER: | 1690 |
| AUTHOR: | Saint Ambrose (340?–397) |
| QUOTATION: | In some causes silence is dangerous; so if any know of conspiracies against their country or king, or any that might greatly prejudice their neighbor, they ought to discover it. |
| ATTRIBUTION: | Attributed to |
| SUBJECTS: | Silence |