Imagination
Nothing is more free than the imagination of man. (David Hume, 18th century Scottish philosopher)
You can be thrown into solitary confinement, chained to the wall, and not allowed to communicate with anyone. Unfortunately, that has been the fate of many over the centuries—and even today. Of course, those who are holding prisoners can restrict the body, but they can’t limit the imagination. It may be that the ability to imagine is what enables the prisoner to survive.
We who have fled to him for refuge can have great confidence as we hold to the hope that lies before us. (Hebrews 6:18)