The referent is the sentence itself.
No. The sentence is where you possibly find referents. It is not a referent in itself. Only information of some kind within it can be referred to in terms of truth. It is a means of putting forth information.
That's true, no sentence refers to anything all by itself. Instead, we can only look at it, consider what we understand of it, and decide in the privacy of our mind whether we can make sense of the sentence as referring to something.
Well, me, I'm quite sure there's no problem understanding the sentence as referring to itself, and therefore most people should be able to understand it this way. Certainly, many philosophers and mathematicians have been able to do so throughout history.
The sentence is also a re-writing of the Paradox of the Liar, and in fact the sentence is still called today, somewhat confusingly, the Paradox of the Liar. And Liar just says: "I am lying". The effect is the same. The liar is referring to himself just as the sentence can be understood as referring to itself. And the two paradoxes have a same paradoxical consequences that the initial utterance implies the falsehood of it.
So, you're free to refuse to see the sentence as referring to itself but it's your unjustified choice.
The sentence merely has a claim that it is true.
But sentences are not true or false in themselves. Sentences are a means in which information is potentially transmitted.
Some information contained within them is possibly true or false.
We may casually say the sentence is true when what we mean is the information in the sentence is true but lazy use of language is not an argument.
Possibly.
That's true, sentences are never true or false by themselves. Instead, it's up to us to decide first whether we can take them as true or false, and is so, whether we think they are true or false.
With all assertive meaningful sentences, we can always decide by ourselves whether we think the sentence may possibly be true or false, and if so which.
However, in this case, although it is a meaningful sentence since it is a very simple sentence we can easily unpack, and although it is an assertive sentence, i.e. it asserts something about itself, we are apparently incapable of deciding whether it is true or false.
So, you're just wrong again.
EB