不经一事, 不长一智不经一事, 不长一智[bù jīng yí shì bù zhǎng yí zhì]1.■cannot gain knowledge without practice; A fall in the pit, a gain in the wit; In doing we learn.; learned from experience; No knowledge can be gained without actual experience; Wisdom comes from experience.; Wit bought is better than wit taught.; Without experiencing a thing, one can't gain knowledge.