Authors:

Circus dogs jump when the trainer cracks his whip, but the really well-trained dog is the one that turns his somersault when there is no whip.

"The Collected Essays, Journalism, and Letters of George Orwell: As I please, 1943-1945".
Circus dogs jump when the trainer cracks his whip, but the really well-trained dog is the one that turns his somersault when there is no whip.