气候研究不仅是一个科学问题，也是一个社会问题。

要这样行动，使得你意志的准则任何时候都能同时被看作一个普遍立法的原则。

定义属于下定义的人，而不属于被定义的人。

但是这些伤疤中没有一块是新的。它们像无鱼可打的沙漠中被侵蚀的地方一般古老。他身上的一切都显得古老，除了那双眼睛，它们像海水一般蓝，是愉快而不肯认输的。

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.

I think goals should never be easy, they should force you to work, even if they are uncomfortable at the time.

The greatest thing to come out of my country is not Ganges water, or the Taj Mahal, or the Himalayas, but the fact that it is the world's largest democracy.