农业的真正领导力意味着为长期收益做出艰难决定。
True leadership in farming means making tough decisions for long-term gains.
Zero Defects is a performance standard. It is the standard of the craftsman, regardless of his or her trade.
The greatest stories are those that reveal the human heart in conflict with itself.
工具变量的美妙之处在于它们让我们以新的视角看世界。