It's human nature to start taking things for granted again when danger isn't banging loudly on the door.

It's human nature to start taking things for granted again when danger isn't banging loudly on the door.

当危险不再猛烈地敲门时，人们又开始把事情视为理所当然，这是人类的天性。

-- David Hackworth 大卫·哈克沃斯