Pali Canon support for living on the edge between all dualities?

I am still a novice and searching for specific canon support for Shakyamuni's view on "walking the median path" between dualities. My goal is to dispel this pervasive view that Buddhism is a rigid, cold existence. I think this is my best starting point but haven't read these portions of the dhammapada yet or my memory is just getting bad in my old age.