Fallor ergo sum means by being mistaken i am, for without the mistake there's nothing no not even nothing that's something
It's an response to cogito ergo sum that came a thousand years before it.
By the way Descartes was not even certain that he was not dreaming the only thing he knew for sure was that he was thinking and therefore, he am.. this movie Inception for all it's Hollowood dressing is really, on one level, a cogitation on that idea
C: Deceived- is more likely what he had in mind...
So St. Augustine may not have had failure or instability in mind as the predicate for existence, but one cannot dismiss the notion that imbalance is the cause of all activities, Just as a perfect balance would on the contrary preempt any activity. If so, it can be stated that -the greater is the imbalance present in a system the greater are the activities it causes within that system which aim at a constant that is a precarious and continuous adjustment of what would otherwise be either a perfectly static and inert immobility or total chaos. With this in mind one can say then that in theory at least, there had to be a point in "time" when the odds would have been even for the universe to exist or not to exist. However, perfectly even odds would produce a perfect equilibrium, a motionless, unproductive perfect stability that could only be interpreted as an accidental shift towards the Zero without satisfying the mathematical potential of the One. This then introduced an unresolved element expressed in the form of imbalance or instability which became the prime mover since in it and by it the One rebounded and once activated found- as we know- limitless expression. (There is justice in Mathematics.)
This could be lyrically represented by Brahman falling off his throne and becoming lost in his dream.
Mathematically it is represented by Pi, which being an irrational proportion creates the aperture by an infinite sequence of failures as the interstices where existence is played out at all levels.