思想没有比关爱老百姓更高尚的，行为没有比让老百姓快乐更厚道的。

我不认为自己是一个对答案感兴趣的作家。我对问题感兴趣。

Music is my life and my passion.

Climate change is the greatest challenge agriculture has ever faced, but also its greatest opportunity for reinvention.

动力学的方程在用变分法的语言表达时是完全的。