The past is not dead, it is not even past.

A good algorithm is like a good story: it has a clear beginning, middle, and end.

Forests are the lungs of the earth, and we must protect them with the same urgency as our own health.

解释：脚力不强劲，行程就不会远；刀刃不锋利，割东西就不会深。

Dreams need courage, and even more action.

Those who do not remember the past are condemned to repeat it.