expression, godan verb (-ku)
cultivate wisdom; refine one's intellect
Rare, literary expression for the pursuit of wisdom or intellectual refinement. Often used in philosophical or self-improvement contexts.
読書は智を磨く最良の方法の一つだ。
Reading is one of the best ways to cultivate wisdom.
Rare literary expression; the kanji 智 is less common than 知 in modern Japanese.
More common modern spelling using 知 instead of 智.
More common expression with a similar meaning, using 知恵 (wisdom) instead of 智.
Compound of 智 (wisdom) + を (object marker) + 磨く (to polish, refine). The exact historical origin is uncertain; it follows a common pattern of metaphorical polishing for self-improvement.