The study of mathematics is the indispensable basis for all intellectual and spiritual progress.

Disciplining yourself to do what you know is right and important, although difficult, is the highroad to pride, self-esteem, and personal satisfaction.

可持续的世界始于可持续的选择。

The energy industry must adapt and evolve to meet the challenges of the 21st century.

I always try to push myself to the limit, to see how far I can go.