"That's the way you operated when I set up your basic personnel program five years ago. It didn't work then; it won't work now."
The General's face darkened. "It will work. Because it has to. Men are going to the stars--because they have to. And they're going to change themselves to whatever form or shape or ability is required by that goal. They've done everything else they've ever set themselves to do--life came up out of the sea because it had courage. Men left their caves and struck out across the plains and seas, and took up the whole Earth and made it what it is--because they had courage.
"But to go to space, courage is not enough. We need a new kind of man that we've never seen before. He's a man of iron, who's forgotten he was ever flesh and blood. He's a machine, who can perform over and over the same kind of complicated procedure and