化学工业是现代文明的支柱，我们必须以应有的责任感对待它。
When you have nobody you can make a cup of tea for, when nobody needs you, that's when I think life is over.
The true measure of a forest's worth isn't in board feet of timber, but in centuries of ecological balance.
The writer's secret is not inspiration—for it is never clear where it comes from—but stubbornness, endurance.
