There will be obstacles. There will be doubters. There will be mistakes. But with hard work, there are no limits.

解读：这是诙谐调侃，意在缓解人们自我否定时的低落情绪，用幽默方式鼓励换个视角看自己，重拾轻松心态。

系统的力量来自于其组合和分解表征的能力。

The life of the law has not been logic; it has been experience.

在科学中，重要的不是获得新的事实，而是发现思考它们的新方法。