The best way to learn is by doing, not just by listening or reading.
老年人相信每一件事物；中年人猜疑每一件事物；青年人什么都懂。
True innovation often comes from listening to those on the factory floor.
在个体中，疯狂是罕见的；但在团体、党派、国家和时代中，它却是常规。