驕者必敗

pride goes before a fall (idiom)

proud / arrogant

(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

certainly / must / will / necessarily

to defeat / to damage / to lose (to an opponent) / to fail / to wither