Escaping Death

Now Judge Stella had been doing the job for 20 years. In that time she had had many disagreeable, violent people in front of her. However Stella was made of stern stuff. She had never hesitated in sending people to the gallows. “Der Teufel steckt im Detail. “ she used to say – as she sent a prisoner to his death…
The prisoner she saw today was the worst, though. This prisoner was called ‘Rob-the-Philosopher’.
Stella didn’t know much about philosophy – and the title of this prisoner annoyed her.
Stella said: 'I intend to teach you the value of honesty, prisoner. You have been found guilty of being a crook and a swindler and of repeatedly and systematically lying to the court to try to save your wretched skin. Well, justice has caught up with you now, my friend. The sentence of this court is . . .' (here Stella pauses for effect and dons a pair of black gloves and a little black hat) ' . . that you be taken from here to a place of execution and hanged by the neck until you are dead.
. . . BUT, as I am a magnanimous Judge, I shall give you one more opportunity to learn the value of truth. If, on the day of your execution, you sign a statement making one true declaration, the sentence will be commuted to ten years imprisonment. If, on the other hand, your statement is, in the view of the Chief Executioner, false, the sentence will be carried out immediately. And I warn you,' Stella adds, seeing his words having no effect on the crook, 'the Chief is a member of the Logical Positivist Executioners' Club and will dismiss any metaphysical nonsense as false, so don't try any of your tricks on her! There, now you have one day in which to make your choice!'
At this the jury of Eric and Richard, Veronika, Nico, Abraham, Karla, Lau, Celina (now recovered), Vitoria, Andres, Ignacia, and Lau applauded at the severity of the sentence and everyone in the courtroom looks at the defendant, pleased to see such a villain get a heavy sentence, coupled with the humiliating public true declaration. But, strangely, the Philosopher just smirks back as he is led away to Death Row.
The day of the execution arrives and the crook, beaming, signs a declaration which is handed to the Chief Executioner who reads it with growing bewilderment. Then, snarling, she crumples it up and orders the Philosopher be released, with no penalty whatsoever to be ~imposed.


What could the prisoner have said in the statement to have saved himself?

Rob-the-Philosopher could have said '' I will be hanged in the future '' because if the Chief Executioner said that it is not true, the philosopher was not going to die, so he had to say it was true, and so the philosopher was released.