波函数不是描述单个系统，而是描述系统的集合。
True progress in agriculture is measured by health, not just yield.
The worst thing in the world that can happen to you if you’re an engineer that has given his life to develop something is for someone to just rip it off.
People who cannot find time for recreation are obliged sooner or later to find time for illness.
The most valuable resource we have isn't in the ground - it's the people who show up every day to do the work.
每家沃尔玛商店都应该反映其顾客的价值观，并支持他们对社区的愿景。