Reflect upon your present blessings, of which every man has plenty; not on your past misfortunes, of which all men have some.

The truth is, the past is all we have. We can't change it, but we can learn from it.

社会系统是个人之间以及群体之间关系的系统。

物理学家必须有一种信念，即宇宙是由理性且可理解的规律所支配的。

能源转型不仅仅是更换燃料；它关乎整个经济和社会的转型。

计算复杂性的美在于它能够根据问题的固有难度对问题进行分类。

怀疑是智慧的开始。