Every tyrant who has lived has believed in freedom--for himself.

Happiness， like unhappiness， is a proactive choice.

What we plant in the soil of contemplation, we shall reap in the harvest of action.

Collaboration between industry and regulators is essential to achieve both economic growth and environmental protection.

像煤炭开采这样的传统行业中的创新不仅是可能的——它是必不可少的。