@reasoning logic,
Let me try another way.
We know squared circles are nonexistent. However, their nonexistence is the negation of their existence: they do
not exist (we are negating their existence). Notice how the negation refers to the very existence it negates. Now remember: squared circles do not exist. So the existence we are negating is impossible, it shouldn't be there for us to negate it! Let's remove it. Now our negation refers to what? To the
nonexistence of squared circles. In other words, we are saying that their
nonexistence does
not exist, which means they exist! So in order to say that squared circles do
not exist, we must refer to their
existence, even if we know it is impossible. You can try to overlook that contradiction, or to ignore or forget it, but no matter what you do, you cannot
eliminate it: it is
always there looking at you.