森林是地球的肺，我们不要让它窒息。
一旦您了解如何编写程序，就请其他人来编写它。
The human mind is a set of information-processing machines that were designed by natural selection to solve adaptive problems faced by our hunter-gatherer ancestors.
"The best way to predict the future is to invent it."
As Will Rogers would have said, "There is no such thing as a free variable."