Innovation is the ability to see change as an opportunity, not a threat.

在解释行为时，意志的概念是不必要的。

The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

最好的想法来自挫折。最糟糕的是当一切都完美的时候。

任何实验的价值和效用都取决于材料是否适合其使用的目的。