Cassandra Cain's (Jodie Applebaum's) theme in the Gotham quintology by Tim Burton and Geoffrey Wright and in Spielberg's "Superman: man of steel" quintology / septology.... Jodie Applebaum's consciousness literally defines teh quintessence of the quote / aphorism by Heraclitus ".. you never step in the same stream river twice.."..

https://www.youtube.com/watch?v=3N2EOjfoXbQ