The apex of perfection in ...

The apex of perfection in equestrian art is not an exhibition of a great deal of different airs and movements by the same horse, but rather the conservation of the horse's enjoyment, suppleness and finesse during the performance, which calls for comparison with the finest ballet, or performance of an orchestra, or seeing a play by Racine, so moving is the sight of perfectly unisoned movements.
 Nuno Oliveira

Quotes from the same author

The horse must understand and accept any demands made by rider without any resistance. Reward the horse each time he does what is asked of him. Never ask for more than he is capable of giving. Make him a COMPANION, and not a slave, then you will see what a true friend he is.
 Nuno Oliveira
When the rider demands the piaffe, he has to halt the horse a few strides before the latter wants to stop of his own accord.
 Nuno Oliveira
Every rein aid must be preceded by an action of the torso. Otherwise you only address the horse's head.
 Nuno Oliveira