As Will Rogers would have said, "There is no such thing as a free variable."

Writing is a way of survival.

"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."

世界越是混乱，我们越需要建筑来理解它。

The best time to plant a tree was 25 years ago. The second best time is today.

可持续性不是一个流行词，而是全球粮食安全的唯一出路。

经济学家的角色既是科学家，又是工程师。