By used books. They have the same words as the new ones. Also libraries.
译文:读书学习,每天都要补上自己的不足,半途而废和剪断织布的线有啥区别?(乐羊子妻劝丈夫坚持学习)
天下的根本在于国家,国家的根本在于家庭,家庭的根本在于个人。
The poem is an act of the mind, not a transcription of the world.