We must balance the need for affordable energy today with the imperative of building a sustainable energy future.

"You have to put in the hours because there’s always something which you can improve."

我从不后悔自己的选择，因为那是我的人生。

We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.

Success is not final, failure is not fatal: it is the courage to continue that counts.

True understanding in science comes from connecting seemingly unrelated dots.