国家是人类社会中最重要的机构，因为它是唯一可以合法使用武力来维持秩序的机构。
The state is the most important institution in human society because it is the only one that can legitimately use force to maintain order.
In all things — except love — start with the exit strategy. Prepare for the ending. Almost anything is easier to get into than out of.
好奇心推动科学前进，但智慧必须指导其应用。
The true value of a tree is measured in decades, not dollars.