乐观不仅仅是一种特质；它是一种可以培养的技能。
The best designs come from understanding the problem deeply and then finding the simplest solution.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.
如果主权者对一个臣民的要求比另一个臣民多的话，事情就变成个别的，他的权力也就不再凑效了。