It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.

"Every story is a journey, and every journey changes the traveler."

The most profound discoveries often start with simple observations.

儿童心灵上的许多烙印，都是成人无意间烙下的。

We must be guardians of the ocean, not plunderers.