幸福就是珍惜小事。
模型的目的是足够简单以便理解和使用,但又足够复杂以捕捉系统的基本特征。
The most valuable resource in any organization is its people.
Faith is the substance of things hoped for, the evidence of things not seen.
我们知识的边界就是我们好奇心的前沿。
Change is inevitable, but growth is optional.
Innovation in mining technology is what will keep the industry alive in the next century.