The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.

The best way to predict the future is to create it.

在科学中，最重要的不是获得新的事实，而是发现思考它们的新方法。

高利润并不必然需要艰苦的工作、低工资和恶劣的条件。

The past is always tense, the future perfect.

The most important skill in AI is the ability to learn.

释义：君子在面对挫折、困难的时候，应该反躬自问，修养品德。蹇（jiǎn），多指行动迟缓、困苦、不顺利的意思。