The most important skill in mathematics is the ability to think clearly.
Coal miners don't just dig in the dirt, they dig for progress.
"Sometimes the greatest act of rebellion is simply to remember."
The best way to have a good idea is to have a lot of ideas.
The key to sustainable development is to balance economic growth and environmental protection.
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.
We must think beyond our own lifetimes when it comes to energy.