Never stop learning; the world is always changing.

史记

Joy is the emotion which accompanies the fulfillment of our natures when we have lived up to our potential.

写作的行为是对遗忘的一种抵抗。

我们不能忽视煤炭的经济作用，但也不能忽视其环境影响。

爱与被爱就像从两面感受阳光。