一流的智力的考验是同时持有两种相反的观点,并且仍然保持运作的能力。
Technological innovation without user thinking is just self-indulgence.
农业成功的真正衡量标准不仅仅是产量,还有我们土壤和社区的健康。
The true teacher defends his pupils against his own personal influence. He inspires self-distrust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.