For millennia oxen had been the beasts that plowed, harrowed, and tilled the fields. It was only with the production of new agricultural machines during the eighteenth century that the heavy horse, faster and stronger than the ox, came into his own. The glorious might of the heavy horse, refined and nurtured over two centuries and paraded annually at the county fairs and shows of America and England, had attacted as much artistic passion as any of the finer breeds." from The Art of the Horse by John Fairley