Monads are indivisible entities, the basic elements that constitute the world.
马克思的功绩在于他忽然在社会思想史上产生了一个质的变化。他解释历史,理解其动力,预测未来,但除了预测之外,他还表达了一个革命性的概念:世界不仅必须被解释,还必须被改变。
The mining industry must evolve or become obsolete—there's no middle ground.