人类以书信交往的历史，大概要与使用文字的历史一样长。从古代的鸿雁传书，到现代的“绿衣使者”送信，已不知经过了多少个世纪。 书信，在人们的交往中有着不可替代的作用，尽管现在电话日趋普及，甚至有了电子信箱，但人们仍需要写信。我想，即使到移动电话像钢笔一样普及的 The history of human communication by correspondence is probably as long as the history of using words. From the ancient geese messenger, to the modern “messenger of green messenger”, I do not know how many centuries passed. Epistles have an irreplaceable role in people’s interactions. People are still required to write letters despite the growing popularity of their phones and even their e-mail address. I think even as mobile phones are as popular as pens