In a state, the liberty of one citizen is the liberty of all.

I think it's important to be able to not take yourself too seriously.

The mining industry must lead by example in safety, sustainability and social responsibility.

A healthy animal is the foundation of a healthy food chain.

思考的过程不仅仅是把一件事加到另一件事上；它在于观察结构特征和结构要求的操作。

写作是保存过去真相的一种方式。