translation.en: That is why the printing press succeeded, and that is why Martin Luther nailed his 90 theses to the door: because he was complaining that the Catholic Church had gone amok in printing out indulgences and selling them in every town and village and city in all of Western Europe.
translation.zh: 这就是印刷机成功的原因 也是马丁路德 在教堂张贴他的90条论纲的起因 他抱怨天主教会通过 印刷赎罪券并大肆在 欧洲西部的每个市镇乡村疯狂售卖