Sometimes you have to sacrifice one to save them all.
''I have done a similar thing! I have found beauty. I have flow on the morning wind. I have looked down on all the sleeping houses and gardens. I have smelled the sea and even seen it, beyond the hills,from my high place."
"When one must lose a little beauty if one is to keep what little beauty one already has."
''But the other man will have an evil face and an evil heart, and the beauty will be gone. It is this man i fear."
"what is the life of one man against those of a million other? I must take solace from that thought."
The theme is developed throughout the story by showing that he must sacrifice the man who invented the flying machine in order to save his village and anything that happens in it.