“Über Wahrheit und Lüge im aussermoralischen Sinne”: “A Chave Perdida” /”The Lost Key” by Flor da Boca - Projectos
Ironically, a better philosopher skewered the idea of truth a while ago.
What then is truth? A mobile army of metaphors, metonyms, and anthropomorphisms -- in short, a sum of human relations, which have been enhanced, transposed, and embellished poetically and rhetorically, and which after long use seem firm, canonical, and obligatory to a people: truths are illusions about which one has forgotten that is what they are; metaphors which are worn out and without sensuous power; coins which have lost their pictures and now matter only as metal, no longer as coins. We still do not know where the urge for truth comes from; for as yet we have heard only of the obligation imposed by society that it should exist: to be truthful means using the customary metaphors - in moral terms, the obligation to lie according to fixed convention, to lie herd-like in a style obligatory for all...
Even more ironically, although Nietzsche (and Álvaro Cordeiro aka Paulo Vaz as his on-stage persona) avoids applying the word "truth" to it, he is presenting this as ... truth! Whenever I have tried to read Nietzsche I have got the impression that he presents his subjective views on social and psychological matters as philosophical truth. Basically, for Nietzsche, truth is what Nietzsche says. On this play, truth is what the characters in this play say.
We do not live in a post-truth world; we live in a world of competing "truths" because people do not agree on what our criteria for and sources of truth should be. For many, truth is defined by their own experience and self-perceived identity, rather than with reference to others or history or philosophy or epistemology or science or faith. As a Christian I believe these are vital issues. As someone in the gospels is reported to have said: What is truth?
If you're into Theatre and Post-Truth, read on. Otherwise, stay well clear.