There is a famous remark from Abraham Lincoln “Give me six hours to chop down a tree, and I will spend the first four sharpening the axe."That's to say, sharpening your knife won't waste your time for cutting your firewood.
有一句名言,亞伯拉罕.林肯的“給我留個小時砍倒一棵樹,我會先花四小時磨斧頭。”這就是說,磨練你的刀不會浪費你的時間,減少您砍的柴火。