Optimus Prime : What your leaders say is true: this was all my fault. I told them whom to trust. I was so wrong.
Sam Witwicky : That doesn't make it your fault, it just makes you human for a change.
Optimus Prime : Remember this: you may lose your faith in us, but never in yourselves.
Sam Witwicky : I need to know how you're going to fight back. I know there's a strategy, I know you're coming back with reinforcements, something. I know there's a plan. You can tell me, no other human will ever know.
Optimus Prime : There is no plan.
Sam Witwicky : If we just do what they want, how are we ever going to live with ourselves?
Optimus Prime : You are my friend Sam, you always will be. But your leaders have spoken. From here the fight will be your own.
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From: Transformers: Dark of the Moon (2011)