不用圆规和曲尺，就不能画出方形和圆形。比喻做事要遵循一定的法则。
如果你不犯错，说明你不够努力。
好的政策需要健全的理论和实证验证。
所以,即使做很困难的事情,也一定能够达到目的,没听说过想达到自己的愿望,而能回避困难的。
The problem with people is that they forget to look at the big picture.
The food industry has a responsibility to both people and the planet.