科学不仅仅是寻找答案，更是提出正确的问题。

富人和你我不同——他们钱更多，同情心更少。

The coal industry must evolve or risk becoming obsolete. Adaptation is the key to survival.

The human being cannot live in a condition of emptiness for very long: if he is not growing toward something, he does not merely stagnate; the pent-up potentialities turn into morbidity and despair, and eventually into destructive activities.