In short, Jung built this stone house with a tower that he called The Tower right on the edge where the forest meets the lake. A: Awesome, right? B: He did a lot of introspection and art there, including The Tower itself, you could say.
In a large stone on the side edge of an entrance is chiseled in Latin "VOCATVS ATQUE NON VOCATUS DEUS ADERIT."
It means "called or not called (the) god will be there."
It's a quote from something ancient and Greek. (Don't make me look it up again.)
The curious thing is the spacing of the letters. I can't help but wonder if he himself pondered the number symbolism of the symmetry.
It's written in five lines without regard to the usual word separations.
Notice it is a block of 5 lines. In each line, the number of letters varies symmetrically: