I grew up on the land, and I knew what hunger was.

化学工业是现代文明的支柱，我们必须以应有的尊重和责任对待它。

The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence.

有耐心是弱者的优点，缺乏耐心是强者的弱点。

不要害怕问愚蠢的问题。因为99%的情况下其他人也想问同样的问题，只是因为怕尴尬而羞于提问。