Life is a training for the soul.
生活是对灵魂的修炼。
过去是一个陌生的国度;他们做事的方式不同。
Personality changes more during your 20s than at any other time in life.
The only thing that is truly important is the difference you make in the world.
气候研究不仅是一个科学问题,也是一个社会问题。