A wise man will make more opportunities than he finds.

The rocks may be hard, but our resolve must be harder.

Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

"To be Irish is to know that in the end the world will break your heart."

In general， the art of government consists of taking as much money as possible from one class of citizens to give to another.

The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.

痛苦是一种果实，上帝不会让它生长在无法承受的脆弱枝干上。

Curiosity is the engine of discovery.

Sustainability is not an option; it's the only path forward for agriculture.