@guigus,
Ok let me try that.... here is the second step:
"And yet, since the truth of a falsehood is a falsehood,
for any truth to be true it must have itself as a truth,
which must be different from it."
The identity you speak of I think is: "the truth of a falsehood = a falsehood". (If that isn't right let me know) I guess you are right there. I am denying that as I think the truth of a falsehood, unlike a falsehood, is a truth. The falsehood is what is false and the truth of the falsehood is not false but is true. So now on to your reason...
"for any truth to be true it must have itself as a truth,
which must be different from it"
It seems it has two parts:
1) for any truth to be true it must have itself as a truth
2) which must be different from it
Ok so taking 1) first: The truth of a falsehood must have itself as a truth. I don't have a problem with that as it is true that the falsehood is false and that truth is "had" by the truth of the falsehood. So no problem with 1)
Now 2): "which must be different from it" Trying to get that but can't. I don't think you mean that the truth of the falsehood relies on a situation in which the truth of the falsehood resides because you seem to exclude the message in earlier posts.
I am sorry. Still don't get it. Was kicked in the head by a horse when I was little. Can you explain?