思所以危则安矣，思所以乱则治矣，思所以亡则存矣(《新唐书·魏徵传》)

Peace will prevail if one is aware of the source of danger;stability is ensured if one is alert of turmoil; a nation will survive if one is prepared against its fall; To think about why danger looms will ensure one’s security;to think about why chaos occurs will ensure one’s peace;and to think about why a country falls will ensure one’s survival. (The New Chronicles of the Tang Dynasty)