农业的可持续性不是一种选择，而是我们星球未来的必需品。
Always demand a deadline. A deadline weeds out the extraneous and the ordinary. It prevents you from trying to make it perfect， so you have to make it different. Different is better.
钢铁行业必须拥抱可持续性，才能在21世纪生存下去。
The essential thing in life is not so much conquering as fighting well.
学习速度现在是商业中唯一可持续的竞争优势。