Similar quotesI know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
Albert Einstein 
The best weapon against an enemy is another enemy.
Friedrich Nietzsche 
You can't depend on your eyes when your imagination is out of focus.
Mark Twain 
To invent, you need a good imagination and a pile of junk.
Thomas Alva Edison 
Imagination governs the world.
Napoleon 