" People who think they need high-pressure methods or tools—pinch collars or electric appliances—to train a dog have no clue how to train a dog well. Training, both as a hobby and as a profession, should be pleasant for the dog and the handler. It should be a successful learning process that yields progress for both parties. If training becomes a torment for the handler or the dog, then both parties are on the wrong track. "

― , K9 Schutzhund Training: A Manual for IPO Training through Positive Reinforcement (K9 Professional Training Series)