生产力的提高是社会进步的动力。
The improvement of the productive powers of labor, and the greater part of the skill, dexterity, and judgement with which it is anywhere directed or applied, seem to have been the effects of division of labor.
采矿业不仅仅是挖洞，而是释放地球的潜力。
译文：志向正直就能遏制各种坏念头，心里平静处理各种事情就不会急躁。赏析：恶念是所有错误行为的根源，我们要砥砺自己的品格，遇事冲动鲁莽，只会坏事。