History is a guide to navigation in perilous times. History is who we are and why we are the way we are.

History is a guide to navigation in perilous times. History is who we are and why we are the way we are.

历史是危险时代的航路指南。历史就是我们是谁，为什么我们是现在的样子。

-- David McCullough 戴维·麦卡洛