A little neglect may breed great mischief; for want of a nail the shoe was lost; for want of a shoe the horse was lost; and for want of a horse the rider was lost.
一点疏忽可能酿成大祸:少了一颗钉,掉了一只蹄铁;掉了一只蹄铁,失去了一匹马;失去了一匹马,骑手也因此丧命。
— Benjamin Franklin · The Way to Wealth (1758) · Section II —