智者千虑，必有一失

lit. a wise person reflecting a thousand times can still make a mistake (idiom); fig. nobody is infallible

wisdom / knowledge

wise; wisdom

sage / wise man / clever and knowledgeable person

(after a verb or adjective) one who (is) ... / (after a noun) person involved in ... / -er / -ist / (used after a number or 後|后[hou4] or 前[qian2] to refer to sth mentioned previously) / (used after a term, to mark a pause before defining the term) / (old) (used at the end of a command) / (old) this

thousand

see 鞦韆|秋千[qiu1 qian1]

to think over / to consider / anxiety

certainly / must / will / necessarily

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

to lose / to miss / to fail