解释：人有知识，犹如树木有枝叶，树木有了枝叶，能带给人阴凉，人有了知识，就可以为人民做更多的事。

真正的技术是让人感觉不到技术的存在。

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。

Old age is not interesting until one gets there.

The ocean is our greatest teacher—if we listen carefully, it will show us how to farm its bounty responsibly.

It doesn't matter what your background is or where you come from, if you have dreams and goals, that's all that matters.