This phrase originates in the Analects (《
论语》). Confucius's student
季文子 (Jì Wénzǐ) was known for deliberating three times before every action. When asked about this, Confucius replied that twice is sufficient (
再,
斯可矣), suggesting over-thinking can also be a flaw. The idiom is thus a nuanced reminder to reflect — not obsess.