在文学史上，《与元微之书》是唐代白居易写给好友元稹的一封信。这封信充满了深厚的情谊和对人生境遇的感慨，同时也展现了作者的文学才华。

原文如下：

微之足下：

近来身体安康否？余自离京后，虽生活平静，然心中常念足下。京中岁月，与君共度，实为人生快事。然世事无常，人事变迁，今各奔东西，各自忙碌，虽相隔千里，然情谊不减。

君于远方，不知是否安好？余近来读书写作，偶有小成，然总觉得少了君之陪伴，趣味大减。君若有暇，盼能回信，与我分享近况。

翻译如下：

Dear Yuan Weizhi,

How have you been lately? Since I left the capital, my life has been peaceful, but I often think of you. The days in the capital spent together were truly enjoyable. However, as time passes and circumstances change, we now lead separate lives, each busy with our own affairs. Although we are thousands of miles apart, our friendship remains strong.

I wonder how you are faring in your distant location? Recently, I have been reading and writing, occasionally achieving something small, but I always feel that without your company, everything lacks interest. If you have time, please write back to me and tell me about your recent situation.

以上即为《与元微之书》的原文及其翻译。这封信不仅表达了白居易对友人的思念之情，也反映了他对友情的珍视以及对生活的深刻感悟。