"Beyond Good and Evil" is one of the philosopher Friedrich Nietzsche's great works. Tyr Anasazi was reading it on the bridge of the Andromeda Ascendant, while he and Beka Valentine were in command, when the Andromeda was refueling and getting new supplies at El Dorado Drift.
- The core concept of the book is expressend in the quotation, "That which is done out of love is always beyond good and evil.", although in the latter section the original German has a stronger sense of "occurs" or "takes place" rather than simply "is".
- All of the "Xenosaga" games use the title of a Friedrich Nietzsche book.