Here are some perspectives on the strength of the human imagination, from some notably imaginative types:
"It's not what you look at that matters, it's what you see. " - Henry David Thoreau
"Live out your imagination, not your history." - Stephen Covey.
"I saw the angel in the marble and carved until I set him free." - Michelangelo
"Imagination rules the world." - Napoleon Bonaparte
"If everyone is thinking alike, then somebody isn't thinking. " - George S. Patton
(Patton always make me smile.)
Quotations are from brainyquote.com