We in this country, in this generation, are---by destiny, rather than choice---the watchmen on the walls of the world.

We in this country, in this generation, are---by destiny, rather than choice---the watchmen on the walls of the world.

我们在这个国家，在这个时代，是——由命运，而不是选择——世界墙上的守望者。

-- John F. Kennedy 肯尼迪