A danger foreseen is half avoided.

This echoes the sentiments of "look before you leap" and the Boy Scout motto: "be prepared". Other sayings such as "meet trouble half-way" and "a little forethought saves much afterthought" are telling us the same thing; and judging by the number of them many people must have come to the same conclusions: Stay alert and look ahead. Obvious, really, isn't it? But how often do we do the exact opposite and "rush in where angels fear to tread". Wisdom does not come easily and we usually don't learn till "the school of hard knocks" teaches us a lesson or two