Die Liebe ist die einzige Kraft, die imstande ist, einen Menschen zu verwandeln.

When obedience ceases to be an irritant and becomes our quest, in that moment God will endow us with power.

Ambition leads me not only farther than any other man has been before me, but as far as I think it possible for man to go.

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

Development economics is ultimately about improving people's lives.

创新不仅仅是创造新产品，更是重新构想技术如何为人类服务。