世界所有前进的动力都归功于不安分的人;幸福的人不可避免地把自己局限在古老的界限内。
The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.
The market is a complex system, and we try to simplify it with models.
Agricultural R&D should be close to actual needs and not divorced from the production front.