Here is a subtle but vital point. I’ve just reiterated that dialectic assumes no prior truth. Dialectic approaches coherence in an iterative and incremental way, sometimes backing up and trying a new path. As a philosopher in what I take to be the genuine spirit of Plato and Aristotle, I think seriously taking up such a work is the very best we mortals can honestly do to achieve high levels of practical confidence about the things that matter most in life. No, it does not have the precision or definitiveness of mathematics, but mathematics is like Aristotelian demonstration in that all it tells us with certainty is that certain conclusions follow from certain premises, so the conclusions are only as applicable to life as the premises and their assumed mapping to the real world.
The vital point is that dialectic — the development of richer meaning — can make real progress, without ever assuming a foundation. No, we’ll never say the last word, but we can iteratively and incrementally build cumulative results. With iterative and incremental development of coherent articulations of what we care about and an openness to acknowledging error, we can progressively improve interpretive confidence.
I think this is what is behind Hegel’s somewhat mystifying talk about spirit producing itself. (See also Interpretation; Dialogue; Ethical Reason; Practical Reason; The Autonomy of Reason; Openness of Reason; Reason, Feeling.)