







千虑一失 is a Chinese idiom (chengyu) meaning “Even a very careful person or a wise man can make a mistake or overlook something”. Literally, “A thousand considerations, one mistake”.
During the Spring and Autumn period, Yan Ying, the prime minister of the State of Qi, was an upright and incorruptible official who lived a very simple life.
Qi Jinggong's subordinates witnessed Yan Ying's modest lifestyle and reported it to Duke Jing of Qi.
Duke Jing then sent a large sum of gold for Yan Ying to use for entertaining guests.
Yan Ying repeatedly declined the gift, saying, 'Even a sage, with a thousand considerations, will make one mistake; and even a fool, with a thousand considerations, will have one gain.'