Birds and Stones

There was once a man who killed two birds with one stone, and he thought, "Have I just increased the weapon value of a stone, or have I reduced a bird's life to something to be killed economically?"

There was once a man who killed a million birds with one plutonium stone, and he thought, "Now, I am my brother's keeper."

Said the second man to the first, "Neither, my brother. You have taught them fear."