That leads I suppose to three further important questions
1) how do we recognise the 'truth' when we do find it (which afterall, is the final purpose of the quest of inquiry)
2) If we do not, or cannot recognise the 'truth' when we find it, is it of any practical value to us?
3) Once we do both find and recognise the 'truth' (and assuming we do), what are we going to do about it?
'Truth' seems to me by nature, to be final and ultimate in itself. I mean that something is either true; or it is not, and is therefore false. There doesn't seem to be any gradation in truth - something is not more true than another thing, as far as I can make out. Ok, so you might say 'it's true that the weather is good today' but also 'it's true that actually the weather is excellent today' but each of these statements is true in and of itself, neither is more true, allowing for subjectivity in what constitutes good weather.
I feel forced to conclude that once we discover and recognise something to be true, there doesn't seem to be any further quest for inquiry in that direction, though the discovery of one truth might in turn lead us to enquire after another truth (though this would not invalidate the first truth, which by definition, must stand alone as truth).
Right, head's beginning to hurt, I'm off to put the kettle on for one last cuppa.