Meditation is inspired by the 1970's Kung Fu television series with David Carradine, Bruce Lee's Silent Flute poem and movie, which he wrote and was later entitled Circle of Iron in 1978, Coronel Kurtz scenes in his shadowy cave in Apocalypse Now from 1979, Spike Lee's Do The Right Thing from 1989, and The Equalizer movie with Denzel Washington released in 2014.