智能化不是替代人，而是让人从繁重劳动中解放出来。

气候的变化不是一朝一夕的原因，而是逐渐积累的结果。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.