today continuing from the Xenophon's book Peri Hippikes
12. For, being then about to raise the left foot, he will thus start with that foot; and just at the moment that the rider turns him to the left, he will make the first spring in his gallop; for a horse, when he is turned to the right, naturally leads off with the right foot, and when turned to the left, with the left foot.
16. But at the time that the rider pulls him in, he ought to sway the horse as little as possible with the bit, and to sway himself also as little as possible; for if he sways himself much, he may be well assured that a very small impulse will be sufficient to stretch both him and his horse on the ground.