Henry L. de Bussigny, Equitation (1922)
“ For the seat is the focus of all equestrian feeling. By way of the seat, the rider senses the coming movements of the horse. By means of the seat, with other aids, he controls or prevents these. Furthermore, it often happens that a fidgety animal will submit unresistingly to a rider whose seat is firm, while another rider, unsteady of seat, will manage it only with difficulty. The creature seems to be affected one way or the other, according as it can or cannot shift the rider's weight. ”
