The only meaningful way for me to proceed with my magnum opus is to pay ever more attention to the addenda and citata. Together, they make it a whole. I became aware of the importance of addenda several years after starting the project (“Production of Residua by Means of Residua,” May 7, 1983). And I became aware of the importance of citata only several months ago (“Record Keeping Be Praised,” July 16, 2014). They provide the interlacing that makes my Residua such a fascinating project. Now I have a listing of all the citata, but I have not yet managed to bring them into the table that already records all the addenda. Next year, the table will have no less than forty rows and columns, thus making the whole exercise rather awkward. Still, bringing the addenda and citata under one, as it were, roof is the first step toward a better understanding of both. I hope that there will be ever more of them in the future, as well. And this is my key objective from now on. Interlacing, forever interlacing. By and by, I will be tying all the disparate bits and pieces into a coherent whole.

Addendum I (April 3, 2018)

Sadly, the idea of bringing addenda and citata under one roof has kind of wilted in the meanwhile. Chances are that it will never be brought to fruition, for it would involve quite an effort. The idea itself remains attractive to this day, though. Who knows, a diligent student of my Residua may give it a try one fine day. I will be long gone by then, but the joy of a single table depicting the interlacing of my writings is already with me. A lucky student, to be sure.

Addendum II (January 13, 2019)

Addenda and citata cannot be brought together not because that would involve “quite an effort,” as the previous addendum claims; rather, they differ in structure. I have long maintained a square table showing all the addenda written to date, and it is triangular in structure because addenda can extend only existing pieces at the time of writing. It is different with citata because they can refer to pieces written both before and after the piece in which they appear. I have just completed a square table showing all citata in existence at this date, and it is square in structure. A recent addendum extending an early piece of writing can contain many citata referring to pieces of writing that were written until the present. As it happens, there are many citata on the diagonal of the table, for they refer to pieces of writing written the very same year. Predictably, the bulk of citata came into existence in the new millennium. In fact, most of them refer to the pieces of writing from the very last decade. The new table is a joy to study, for it pinpoints the most productive years in my magnum opus. And the last decade comes to the fore in the data. It will take me a while to properly understand the new table, though. With forty-four years in both rows and columns, there are many surprises. One of them is that 2014 dominates the table both as the year when citata appeared and the year in which pieces of writing referred to by citata were written. This was my most productive year to date, anyhow. It is closely followed by 2012, 2013, 2015, and 2016, of which the last dominates all other years in terms of addenda. But enough. The new table needs careful study.