What concerns me with the matter of truth is that in order to think and philosophize, a belief in absolute truth is absolutely necessary. However, when it comes to goodness and beauty, these are optional. In order to think or speak, truth statements are absolutely necessary. For example, saying that truth does not exist is a contradiction, as the statement as such is a truth statement. However, saying morality is relative or beauty is in the eye of the beholder are not contradictions, as no statements affirming goodness or beauty are made. So essentially it is completely possible to think and talk without making some goodness or beauty statements. Now I do believe that motivations in saying morality is relative is often for moralistic motivations, which is a whole other topic.
Richard Rohr has an interesting video on the matter of language and its relation to Dualistic thinking.
vimeo.com/161953466
However, in normal thinking, the mind has divided truth, goodness and beauty into three different entities. However, Christian tradition reveals that truth, goodness and beauty are absolute and unchanging. I find that we know right and wrong from natural law, but does not always seem realistic, and mere ideals. This reminds me of the idea that “Might makes right”, which is more profound of a problem than just some rant against tyrants. Considering that what we observe is a world where what can and be done should not be done, and what should be done cannot always be done. So in this way, goodness can seem like unrealistic ideals.
I had an insight on an old explanation of evil as absence of being. So this inherently would mean that being is both true and good. Yet evil seems like a something than nothing. From the Aesthetic point of view, we definitely see ugliness as something. For example, physical pain is repressed through use of anesthetics, which inherently causes a lack of feeling as opposed to pain. Plus, from an aesthetic pov, more is often ugly and less can be more. I remember in a book on death by Peter Kreeft, he explained that death is a friend in that death gives our life form, and without death, we risk becoming everything in general and nothing in particular. Most storytellers know well that for a story to be good, there has to be limitations. Like in most fantasy, there is no infinitely powerful magic where you can snap things into existence at will.
Sorry this went a little off topic. This was just meant to address the problem of the seeming conflicts between truth, goodness and beauty.