@dalehileman,
Dualism is a necessary characteristic of ordinary thought. Up-down, good-bad, real-unreal, hard-soft, beautiful-ugly, true-false, etc. etc. Very useful distinctions (like yin and yang, each identifying its contrast) but not very good as absolute desriptions of reality. In space there's no "up" and "down", direction exists only relative to something. I've never met a person or bird who was totally "beautiful" or "ugly". I've never made a statement that was absolutely "true", or a deed "good" or "bad". "Hardness" is clearly relative to something softer etc. It seems that all traits occur as matters of
degree in relation to their conceptual (not ontological)
opposites. Everything is a shade of grey on a conceptual spectrum between the
ideals of black and white.
But when I just look in a prereflective state of mind (free of my usual "hardening of the categories") I sometimes get a glimpse of pre-categorized phenomena non- (or should I say pre-?) dualistically. This applies most wonderfully to the master bifurcation between "I" and "that". I appreciate then the Hindu dictum "tat tvam asi" (that art thou).