农业的效率不仅仅是产量的问题；它关乎资源管理。
爱不是有限的资源。
The power of causal reasoning is that it allows us to predict the effects of actions we have never taken.
教育的艺术必须从教育的科学中汲取其法则。
Every time you lose, it hurts. But you have to get back up and keep going.
The most dangerous phrase in business is: 'We've always done it this way.'