Freedom is not a condition, but an attitude.
The ideas of economists and political philosophers， both when they are right and when they are wrong， are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men， who believe themselves to be quite exempt from any intellectual influence， are usually the slaves of some defunct economist.
译文：凡是多行善事的人，必然会把福泽留给子孙。而多行坏事的人，必然会把祸殃留给子孙。由此可知，多做善事，为子孙留后福，这才是父母为子孙做长远打算的方式。赏析：人生在世，多存善心，多做善事，多行善举，多结善缘，终修善果。乐善好施，与人为善不仅是帮自己积德，更是帮助子孙后代积福。
保持简单，简单的事情重复做。
The realization that electronic properties can be topologically protected has revolutionized our understanding of solid-state physics.