Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.
为了将关心转变为行动,我们需要发现问题,找到解决方案以及评估后果。但是世界的复杂性使得这三步都难于做到。
世俗的儒者不考察,认为工商是末业,妄加议论抑制。
Every barrel of oil we produce should be done with a focus on minimizing our footprint.