To lead is to serve.

Failure gave me an inner security that I had never attained by passing examinations. Failure taught me things about myself that I could have learned no other way. I discovered that I had a strong will, and more discipline than I had suspected; I also found out that I had friends whose value was truly above the price of rubies.

在每个方程中，都有一个等待被讲述的故事。

God could not be everywhere, and therefore he made mothers.

Never stop learning because the world never stops changing.

可持续发展不仅仅是一个流行词，而是我们对后代的责任。