The best way to create interest in a subject is to render it worth knowing, which means to make the knowledge usable.
激发对一门学科兴趣的最好方法是使其值得了解，这意味着要使知识可用。
"In quantum mechanics, the act of observation changes the system being observed."
政治制度的力量在于其适应不断变化的环境并吸收新思想和实践的能力。
To be brave is to love someone unconditionally, without expecting anything in return.
最优财政政策要求税收随时间平滑，因为突然的变化会扭曲经济决策。
"The past is a story we keep rewriting, even when we don’t realize it."