3338. Some days before, when I extracted what I have written [wrote] concerning spheres, inasmuch as I was then, not in perception of a sphere, I did not know what a sphere [was], nor did the spirits around me know; so that, as it were, no sphere was given. I was then almost led to feel, that such spheres did not exist. Hence I was instructed how men perceive, to wit, that [such things] can never be, because they have not been so taught from any sense.