Without pressing too little or too hard, hold tight the reins for he's a fool who would not get value from a borrowed horse. (Irish Proverb) - More Irish Proverbs...
When a stiff-necked bull stands with its four legs planted firmly and refuses to move, you cannot make it go ahead only by pulling it by the reins and using your whip. (African Proverb) - More African Proverbs...