The question has been debated into obscurity. The reality of things is the only determining factor of what is considered truth. Human perception and cultural/sociological experience determine the outcomes of the experience and descriptions of values. The beliefs and practices provide exercise, how thy filleth thine cup and drank from thine wine! The problem with ancient greek and roman philosophers was the ultimate question, which asked about the reality of things and lack of perception of a universal perspective, you can always analyze the instant and record it but you can never compensate for the change that all things go through including life and human beings. 20 billion years from now once our sun explodes and new elements will form and life will evolve. The only rocks of truth are morality, virtue, goodness and peace as these are witnessed to be eternal, basically how intelligent life forms conduct themselves and to do unto others as you would have done unto you, this is tangible and experienced through return.
Unfortunately, roman and greek philosophers wished to be god and defrayed the question and attempted to con volute the reality of morality so they can get away with conquest . Nothing more to the question.