A house is a machine for living, but it must also be a home.
房子是居住的机器，但它也必须是一个家。
A company's true value is measured by its impact on people and the planet.
The world is made to end in a beautiful book.
我们都是进行中的实验。
The joy of mathematics comes from the struggle to understand.
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。