Karen Rohlf of Dressage, Naturally

"Dressage, Naturally describes my training philosophy. Dressage, Naturally puts equal importance on the Mental, Emotional and Physical aspects of the horse.
My priority is to be an excellent horseman ... who is also excellent at dressage. Typically, trainers of dressage are most expert at developing the body, and natural horsemen are most expert in developing the mind and emotions. Of course, the Mind, Emotions and Body of the horse are all connected; you can't develop one without affecting the other. Each is a doorway into the whole horse, yet each require different strategies to make the change.
The key as an ultimate horseman is to know which system you need to address and to use the appropriate strategy. There are master horsemen who can do this unconsciously.
It is the goal of Dressage, Naturally to be conscious of this process and to learn how to be the best we can be for our horses so they can be the best they can be ... combining the knowledge of dressage and natural horsemanship creates horses that are not only super athletes, and natural partners ... they become more: They become super natural !"
http://www.dressagenaturally.net/
Philippe Karl of Ecole de Légèreté (School of Lightness)

"The founding principle of the School of Légèreté is the absolute respect of the horse. In this concept, Légèreté (French: lightness) is not a declaration of intent of a poetic or esoteric nature, but a philosophy bringing together clear, effective and measurable equestrian concepts.
The philosophy of Légèreté excludes any use of force or coercive artificial aids (including side reins, draw reins, tightly closed nosebands etc.), but includes all types of horse and takes an interest in all equestrian disciplines. It provides an understandable and reliable training plan with clear principles, efficient methods and procedures that fully respect the nature of the horse. It thus allows any seriously motivated rider access to High School equitation, even with a perfectly ordinary horse.
The School of Légèreté takes its inspiration from the masters who have contributed to this equestrian philosophy: Xenophon, Fiaschi, La Broue, Pluvinel, La Guérinière, Dupaty de Clam, Hünersdorf, Freiherr von Sind, Baucher, Raabe, L’Hotte, Faverot de Kerbrech, Beudant, Oliveira etc. It is based on in-depth knowledge of the horse and is ready to re-analyse and improve itself with all types of progress in this respect (anatomy, physiology, locomotion, balance, psychology, ethology).
Lastly it has the aim of getting the best from any horse and fulfilling the rider through the constant search for efficiency via the minimum use of means."
http://www.philippe-karl.com/420/English/Home.html