"It is a question of whether the machine was designed to be beautiful, or beautiful because it was well designed."

"If we worked on the assumption that what is currently accepted as true really is true, then there would be little hope for advance."

"Learning the secret of flight from a bird was a good deal like learning the secret of magic from a magician—something the magician won't tell, and the bird can't tell."

"The machine is a living thing, and must be treated as such."

"We do not believe that the difficulties are insurmountable, and we are confident that we shall yet succeed."