Eager and intense desire is the mainspring of all effective effort. ?
我的語(yǔ)言的界限意味著我的世界的界限。
釋義：只有連根拔除雜草，才能確保它不會(huì)再發(fā)芽生長(zhǎng)。如果砍草時(shí)不除去根部，到了春天雜草還會(huì)再度生長(zhǎng)。
The world is full of obvious things which nobody by any chance ever observes.