解决复杂问题的关键通常是找到正确的抽象，这种抽象可以在不丢失问题本质特征的情况下简化问题。
The key to solving complex problems is often to find the right abstraction that simplifies the problem without losing its essential features.
民主必须在每一代人中焕发新生，而教育是它的助产士。
释义：圆的器物容易滚动，而方的器物则易于停止，这是器物的差异；金属刚硬而水则柔弱，这是它们的物性不同。
The most important object of both the workmen and the management should be the training and development of each individual in the establishment, so that he can do (at his fastest pace and with the maximum of efficiency) the highest class of work for which his natural abilities fit him.
The best solutions come from listening to the land.
我现在身体上已经无法做任何过去喜欢的事，但我并不怀念它们。
