The '-ing' indicates 'motion', a verb.
'Motion' is an illusion/mental product of Perspective; ie; a movie is really static motionless frames seen from a particular perspective, one at a time, linearly/temporally, in a particular order (again, perspective).
So, in answer to your question, I'd say that 'being' is an illusion of perspective, only existing in your thoughts/memory..
I don't think that that is a tautology.
You say that "-ing" implies motion, and motion is illusory. Therefore, "being
is an illusion of perspective, only existing in your thoughts/memory. . ." But then, what do you mean by "existing
" in our thoughts? Would the existence of it in our thoughts be an "illusion" also? So, now our thoughts are mere "illusions," just like motion and being? But what does it mean for a thought to be an illusion?
I'm afraid that all that just doesn't do it for me. '-ing' doesn't necessarily indicate motion. Take for instance the words "standing
," etc. "-ing" merely indicates a process, an event whose truth value is "true" for more than one consecutive time coordinate.
So, back to the original question. I think it depends on what kind of things your talking about. I haven't considered the question very much, but right now I might venture to agree with Berkeley: "being" (at least in the case of things other than myself), means having the potential to be perceived. "Being" for myself, though, is another matter. I think I would say that "being" means "to interact with a reality." I'm not sure whether "interact" would be simple perceiving or if it would involve actual choice. Or maybe perception itself involves choice.
I said "being for things other than myself" and "being for myself" because I suggest that in order to discuss this at all, we must speak only in terms of ourselves and whatever is not ourselves. For, to me, there is logically, spatially, and temporally no difference between you or Bob or Jessica and this table, computer, or pen. What it means for you to "be" with regard to my experience is different than what it means for you to "be" with regard to your own experience.
I'm certainly an amateur at philosophy, so I hope that came out intelligible.