What is the most important anarchist principle?

Jean Pauline, longterm anarchist, Bound Together Bookstore San Francisco, born in 1921, unfortunately passed away in 2016. We interviewed Jean at her home in Oakland on December 31, 2010. An obituary can be found here: https://www.legacy.com/obituaries/sfgate/obituary.aspx?n=jean-pauline&pid=183421420