化学是逻辑的诗，也是诗的逻辑。

Resource development must balance economic benefits and ecological protection to achieve sustainable development.

I quite agree with them that it is not an ennobling experience. Poverty entails fear, and stress, and sometimes depression; it means a thousand petty humiliations and hardships. Climbing out of poverty by your own efforts, that is indeed something on which to pride yourself, but poverty itself is romanticised only by fools.