When I was about 10 years old or so, I heard
“nothing (no claim) can be absolutely true”. – (A)
often times. Was I that stubborn those days perhaps?
The claim (A) is somewhat self-destructive. If (A) holds, then (A) itself can not be absolutely true too. Though there is no paradox in it, since denying (A) causes no contradiction, this has been a bit interesting to me since my childhood. I was repeatedly reminded of the claim once in a while.
This time a book by Motoyoshi Irifuji triggered my memory:
This is not a story of reaching the ultima Thule. Actually it quickly reaches there in the 1st chapter. Rather its argument begins from there, the Thule.
This book paraphrases the claim (A) as follows:
“any claim can be true only with respect to a certain frame of recognition”. – (A)’
Well, then the claim (A)’ is also possibly true with respect to (another) frame of understanding. Again this leads to “unendlich” argument.
A part of investigations by this book is said to be based on an article “Purifying Relativism” written in English.