Arbor Scientiæ is Latin for tree of knowledge, arbor means tree and scientiæ is the genitive of scientia (knowledge or learning). The exact phrase reaches back to Ramon Llull (c. 1232-1316), whose Arbor Scientiae is among the earliest works to bear those Latin words, organizing all knowledge into sixteen proto-fields of science. This is more than a roster of advisor-advisee pairings. Each node records the research question that framed the work and the connective reasoning that carries thought from one generation to the next. I built this page out of enthusiasm for the history of science and for how questions develop across people and generations. What follows traces one path, my direct doctoral lineage through ten nodes. At each advisor the tree forks, and the number of possible chains compounds with every generation, yet every scholar stands on one such line. Each entry is a chapter to an investigation still unfolding. As I assembled this record, it became clear that more than the progression of an idea was at stake and another thread ran underneath, one of service and duty.