From another site:
"Calm, Forward, Straight"
Whether you are riding in circles in the manege, looking for cows, or chasing vermin across country, no maxim is more universally applicable to horse handling, more simple and succinct in it's expression, more difficult in it's execution, and more profound in it's onion layered meaning than Gustav Sreinbrecht's "Ride your horse forward and hold him straight"
General Alexis l'Hotte, ecuyer en chef at Saumur 1864-1870, appended "calm" to Steinbrecht''s famous adage; placing it foremost in the trinity, implying that calmness was requisite to all that followed.
It was adopted by the Cadre Noir at Saumur as their motto: "Calme, en avant, et droit"