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

Innovation in energy must be balanced with responsibility—progress cannot come at the expense of the planet.

The only true voyage of discovery consists not in seeking new landscapes, but in having new eyes.

幸福是一份礼物，关键在于不要期待它，而是在它到来时享受它。

The most important skill in mathematics is the ability to ask the right questions.