Roger Walker

“General, your tank is a powerful vehicle
It smashes down forests and crushes a hundred men.
But it has one defect:
It needs a driver.

General, your bomber is powerful.
It flies faster than a storm and carries more than an elephant.
But it has one defect:
It needs a mechanic.

General, man is very useful.
He can fly and he can kill.
But he has one defect:
He can think.”
― Bertolt Brecht

“I can give her no greater power than she has already, said the woman; don't you see how strong that is? How men and animals are obliged to serve her, and how well she has got through the world, barefooted as she is. She cannot receive any power from me greater than she now has, which consists in her own purity and innocence of heart. If she cannot herself obtain access to the Snow Queen, and remove the glass fragments from little Kay, we can do nothing to help her.”
― Hans Christian Andersen, The Snow Queen

“Act as if you are going to live for ever and cast your plans way ahead. You must feel responsible without time limitations, and the consideration of whether you may or may not be around to see the results should never enter your thoughts.”
― Hyman George Rickover