De La Guérinière is credited for the invention of the
shoulder-in, which he called the "alpha and omega of all exercises"; he was the first to describe it. His treatise ''L'École de Cavalerie'', "The School of Horsemanship", which was published in parts between 1729 and 1731, and as a complete work in 1733, is an important book on the training of the horse, detailing equitation, veterinary treatment, and general horsemanship. This book has become an important text for the
Spanish Riding School of Vienna. De La Guérinière gave exercises to increase suppleness and balance of the horse, and a progressive schooling system to reach an overall goal: a light, obedient, calm horse that was a pleasure to ride. De La Guérinière is also credited with the invention of the
flying change and the
counter-canter. In his book,
Ecole de Cavallerie (Paris, 1733), de La Guérinière stresses the use of few
aids and punishments while riding. He advises the use of the shoulder-in at all
gaits, including the
gallop. De La Guérinière states the rider must also have a good seat in order to have a soft, light hand, and makes several references to
William Cavendish, 1st Duke of Newcastle. == Published works ==