During the scene when Sentinel and Optimus are conversing with one another in that desert area, Sentinel makes a few statements concerning Optimus. Did he mean what he said or was it all part of his deception? Here is what he says to Optimus: Never mourn the past young warrior. Thanks to you, our race survives. In a world I do not know, I am no longer your teacher Optimus; you are mine. On another note, I love this scene. It's so touching and is one of the rear opportunities we get to see some good dialogue between the bots.