时间从我们头顶飞过，但留下了它的影子。
Time flies over us, but leaves its shadow behind.
Curiosity and persistence are the driving forces behind scientific breakthroughs.
I'm a firm believer in the philosophy of a ruling class, especially since I rule.
译文：贫穷的人不用学俭朴，自会俭朴，卑贱的人不用学谦恭，自会谦恭。
粒子的概念只是一个近似，在经典极限下有效。
Every ton of coal extracted should carry the weight of our commitment to the future.