On the Art of Horsemanship

It is necessary to collect him at the turns; for it is neither easy for the horse nor safe to turn short when going fast, especially if the ground is uneven or slippery.

In collecting him the rider must slant the horse as little as possible with the bit, and slant his own body as little as possible; else he may be sure that a trifling cause will be enough to bring him and his horse down.

As soon as the horse faces the straight after turning, push him along at once. For of course, in war too, turns are made with a view to pursuit or retreat. It is well, therefore, to practise increasing the pace after turning.

So soon as the horse appears to have been exercised enough, it is well to let him rest a certain time, and then suddenly to put him to his top speed again, of course away from, not towards, other horses, and to pull him up again in the midst of his career as short as possible, and then to turn and start him again from the stand. For it is obvious that a time will come when it will be necessary to do one or the other.

When the time has come to dismount, the rider must never dismount among other horses or near a group of people or outside the riding-ground; but let the place where the horse is forced to work be the place where he also receives his reward of ease.