此段引文出自康熙閱畢羅馬教宗特使嘉樂（Carlo Ambrogio Mezzabarba）呈遞的教宗克雷芒十一世的通諭《自登基之日/自那一天》（Ex illa die）後說的話：「覽此條約，只可說得西洋等小人如何言得中國之大理。況西洋等人無一通漢書者，說言議論，令人可笑者多。今見來臣條約，竟與和尚道士異端小教相同。彼此亂言者，莫過如此。以後不必西洋人在中國行教，禁止可也，免得多事。欽此。」（賈明子引文時特別略去了「條約」「亂言」的部分，是何動機呢？）
那麼這則通諭到底是什麼內容，居然引得康熙要禁教？讓我們來看看。
首先上拉丁文文本的鏈接（第24頁到第28頁）：Confirmatio et innovatio Constitutionis incipientis: ex illa die a Clemente XI. in causa rituum ... Sinensium editae ...
I. The West calls Deus [God] the creator of Heaven, Earth, and everything in the universe. Since the word Deus does not sound right in the Chinese language, the Westerners in China and Chinese converts to Catholicism have used the term "Heavenly Lord" (Tiānzhǔ) for many years. From now on such terms as "Heaven" [Tiān] and "Shàngdì" should not be used: Deus should be addressed as the Lord of Heaven, Earth, and everything in the universe. The tablet that bears the Chinese words "Reverence for Heaven" should not be allowed to hang inside a Catholic church and should be immediately taken down if already there. 一、西方以「抖死」稱呼天堂、地上與宇宙萬物的創造者。由於在漢語中「抖死」聽起來不對勁，所以在中國的西方人和皈依公教的中國人多年來以「天主」稱呼之。從現在開始，「天」「上帝」都不準用了，只准稱「抖死」為「天堂、地上和宇宙萬物之主」。公教教堂中，凡是寫了「敬天」的牌匾都不準再掛了，如果已經掛上了的也要馬上摘下來。
II. The spring and autumn worship of Confucius, together with the worship of ancestors, is not allowed among Catholic converts. It is not allowed even though the converts appear in the ritual as bystanders, because to be a bystander in this ritual is as pagan as to participate in it actively. 二、皈依公教的人不準參加春秋兩季的祭孔典禮和祭祖典禮。就算教徒只是作為旁觀者參加這些儀式也不行，因為這麼做跟積极參加此類活動同屬異教之行。III. Chinese officials and successful candidates in the metropolitan, provincial, or prefectural examinations, if they have been converted to Roman Catholicism, are not allowed to worship in Confucian temples on the first and fifteenth days of each month. The same prohibition is applicable to all the Chinese Catholics who, as officials, have recently arrived at their posts or who, as students, have recently passed the metropolitan, provincial, or prefectural examinations. 三、如果中國的官員、進士、舉人、生員皈依了羅馬公教，那麼他們就不準每月初一和十五進孔廟行禮。對於中國的公教教徒中那些新上任的官員或新科進士、舉人、生員，這一規定同樣適用。IV. No Chinese Catholics are allowed to worship ancestors in their familial temples. 四、中國的公教教徒不準在祠堂中祭拜祖先。V. Whether at home, in the cemetery, or during the time of a funeral, a Chinese Catholic is not allowed to perform the ritual of ancestor worship. He is not allowed to do so even if he is in company with non-Christians. Such a ritual is heathen in nature regardless of the circumstances. 五、不管是在家中、墓地還是在葬禮上，中國的公教教徒都不許祭拜祖先。就算公教教徒是跟非基督徒者在一起也不準有這類行為。不管在什麼情況下，這種祭拜祖先的行為都是本質上沒有信仰的表現。Despite the above decisions, I have made it clear that other Chinese customs and traditions that can in no way be interpreted as heathen in nature should be allowed to continue among Chinese converts. The way the Chinese manage their households or govern their country should by no means be interfered with. As to exactly what customs should or should not be allowed to continue, the papal legate in China will make the necessary decisions. In the absence of the papal legate, the responsibility of making such decisions should rest with the head of the China mission and the Bishop of China. In short, customs and traditions that are not contradictory to Roman Catholicism will be allowed, while those that are clearly contradictory to it will not be tolerated under any circumstances. 雖然我做出了如上決定，但我也明確說了對於其他的中國習俗和傳統，只要不可被理解為是本質上沒有信仰的表現，那麼皈依公教的中國人就可以繼續遵守之。中國人的齊家治國之道也不應被干涉。在中國的教宗使者對於公教教徒可以奉行哪些習俗、不可奉行哪些習俗有決定權；如果教宗使者不在，那麼在中國的傳教團其餘成員以及中國主教有決定權。簡而言之，（對中國的公教教徒而言，）跟羅馬公教教義不矛盾的習俗和傳統應被允許，但是那些明顯與教義矛盾的習俗和傳統無論如何都要禁絕。
哦，對了，知道羅馬教廷到了什麼時候才正式廢除「禁止祭祖祭孔」的規定嗎？答：1939年於《眾所皆知》（Plane compertum est）通諭中正式允許祭祖祭孔。當然了，教廷不會承認《自登基之日/自那一天》（Ex illa die）搞錯了，只會說「此一時彼一時也，現在的祭祖祭孔是世俗性活動而以前的祭祖祭孔是異教行為，所以公教教會以前沒錯、現在也沒錯」。哈，哈哈，哈哈哈，這死不認錯的脾性我好像剛剛在哪見過啊。
