自然界的所有效应只是少数不变定律的数学结果。
All the effects of nature are only the mathematical consequences of a small number of immutable laws.
The best way to find out if you can trust somebody is to trust them.
对任何模型的最大期望是它能提供一个对现实有用的近似。
Dairy farming is not just a business; it's a way of life that we must protect and nurture.