The Aboriginal use of the term 'uncle' implies many things and often not a biological relationship.
It certainly designates seniority and a kind of deference, but in the case of the late Boon Wurrung, Dja Dja Wurrung, Woiwurrung and Yorta Yorta elder and veteran actor Uncle Jack Charles, it also implies deep respect.
I revered him for the mere fact of his life, and the way he embodied tenacity and the will to survive.