The first step in the art of cutting metals is to find a man who has the necessary skill and experience.

The real moral test of a society is how it treats those who are at the dawn of life, the children; those who are in the twilight of life, the aged; and those who are in the shadow of life, the sick, the needy and the handicapped.

今天很残酷，明天更残酷，后天很美好，但绝对大部分是死在明天晚上，所以每个人不要放弃今天。

It is the peculiar nature of the world to go on spinning no matter what sort of heartbreak is happening.

The past is a different country, they do things differently there.

The most important resource in any economy is its people.

每个圆点都是一个独立的生命。

在量子场论的领域中，真空并非空无一物，而是充满了虚粒子的沸腾大锅。