The Only Reason...

"If there's a buzzing-noise, somebody's making a buzzing-noise, and the only reason for making a buzzing-noise that I know of is because you're a bee."
Then he thought another long time, and said: "And the only reason for being a bee that I know of is making honey."
And then he got up, and said: "And the only reason for making honey is so as I can eat it."

~ A. A. Milne (Winnie-the-Pooh, 1926)