资本主义本质上是一种经济变革的形式或方法，不仅从未静止，而且永远不可能静止。
Capitalism, then, is by nature a form or method of economic change and not only never is but never can be stationary.
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
译文：亲近贤臣，疏远小人，这是西汉兴盛的原因;亲近小人，疏远贤臣，这是东汉衰败的原因。