Origin
This proverb, a synonym of look before you leap, was first recorded in 1477. Charles Churchill put it in poetic form: “Even in a hero’s heart, discretion is the better part” ( The Ghost, 1762). Shakespeare also used a form of it: “The better part of valour is discretion” ( 1 Henry IV, 5:4).
Explanation
It is often wise to refrain from seemingly brave speech or action.Valour means boldness to face dangers. One who does not face dangers boldly is a coward. But if one foolishly faces danger, risking his life, it cannot be called a praiseworthy act. If he loses his life in the act, there will be nobody to receive praise. Using bravery cunningly is real valour. Before braving a danger, we should think and decide upon the safest way to face it. Once we decide on the safest way, we can act boldly. If an elephant is charging at us, we must not stand on its path and face it bravely. We know that we are unable to overpower the charging elephant bare-handed. So, the best thing is to run for safety. Once we are safe where the elephant cannot harm us, it is all right to try some of the tactics to bring it under control.
Example
Son : Can I go hang gliding with my friends?
Father : No.
Son : But they’ll say I’m chicken if I don’t go!
Father : Discretion is the better part of valour, and you’d rather let them call you chicken than risk your life.