Quote by Livy

"The preservation of the state requires that ordinary citizens maintain the vigilance of patriots."

Livy
Historian Ancient Rome 59–17

More from Livy

"The distance between insanity and genius is measured only by success."
"Nothing is so unbelievable that old history cannot show it to be true."
"Wise men profit more from fools than fools from wise men."
"The greatest wealth is health."

All quotes by Livy